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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2012	Jan. 18, 2013	Jun. 30, 2012
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Trading Symbol	ISRG
Entity Registrant Name	INTUITIVE SURGICAL INC
Entity Central Index Key	0001035267
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		40,127,042
Entity Public Float			$ 21,873,011,510

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 553.7	$ 465.8
Short-term investments	770.7	563.4
Accounts receivable, net of allowances of $3.0 and $5.6 at December 31, 2012 and 2011, respectively	370.3	297.9
Inventory	121.5	112.1
Prepaids and other current assets	67.3	20.9
Deferred tax assets	9.3	6.2
Total current assets	1,892.8	1,466.3
Property, plant and equipment, net	241.8	197.2
Long-term investments	1,596.1	1,142.6
Long-term deferred tax asset	87.0	69.1
Intangible and other assets, net	103.4	71.0
Goodwill	138.1	116.9
Total assets	4,059.2	3,063.1
Current liabilities:
Accounts payable	57.6	45.8
Accrued compensation and employee benefits	104.0	83.1
Deferred revenue	185.7	154.2
Other accrued liabilities	54.3	37.5
Total current liabilities	401.6	320.6
Other long-term liabilities	77.5	96.9
Total liabilities	479.1	417.5
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, 2.5 shares authorized, $0.001 par value, issuable in series; no shares issued and outstanding as of December 31, 2012 and 2011, respectively
Common stock, 100.0 shares authorized, $0.001 par value, 40.2 and 39.3 shares issued and outstanding as of December 31, 2012 and 2011, respectively
Additional paid-in capital	2,240.1	1,742.8
Retained earnings	1,333.4	901.9
Accumulated other comprehensive income	6.6	0.9
Total stockholders' equity	3,580.1	2,645.6
Total liabilities and stockholders' equity	$ 4,059.2	$ 3,063.1

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Accounts receivable, allowances	$ 3.0	$ 5.6
Preferred stock, shares authorized	2.5	2.5
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, shares authorized	100.0	100.0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	40.2	39.3
Common stock, shares outstanding	40.2	39.3

Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue:
Product	$ 1,836.2	$ 1,478.9	$ 1,189.1
Service	342.6	278.4	223.9
Total revenue	2,178.8	1,757.3	1,413.0
Cost of revenue:
Product	495.3	382.3	297.3
Service	113.2	101.2	85.7
Total cost of revenue	608.5	483.5	383.0
Gross profit	1,570.3	1,273.8	1,030.0
Operating expenses:
Selling, general and administrative	522.2	438.8	358.8
Research and development	170.0	140.2	116.0
Total operating expenses	692.2	579.0	474.8
Income from operations	878.1	694.8	555.2
Interest and other income (expense), net	15.8	14.9	17.1
Income before income taxes	893.9	709.7	572.3
Income tax expense	237.3	214.6	190.5
Net income	$ 656.6	$ 495.1	$ 381.8
Net income per share:
Basic	$ 16.50	$ 12.63	$ 9.74
Diluted	$ 15.98	$ 12.32	$ 9.47
Shares used in computing net income per share:
Basic	39.8	39.2	39.2
Diluted	41.1	40.2	40.3

Statement of Other Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 656.6	$ 495.1	$ 381.8
Other comprehensive income (loss):
Change in foreign currency translation gains (losses)	0.5	(0.3)	(0.3)
Available-for-sale investments:
Unrealized gains (losses), net of tax	5.1	0.7	1.0
Less: Reclassification adjustment for (gains) losses on investments recognized during the year	0.1	(0.9)	(0.6)
Net change, net of tax effect	5.2	(0.2)	0.4
Derivative instruments:
Unrealized gains (losses)	(1.1)	0.5	0.2
Less: Reclassification adjustment for (gains) losses on derivative instruments recognized during the year	1.1	(0.7)
Net change, net of tax effect		(0.2)	0.2
Other comprehensive income	5.7	(0.7)	0.3
Total other comprehensive income	$ 662.3	$ 494.4	$ 382.1

Consolidated Statement Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning Balances (in shares) at Dec. 31, 2009		38.5
Beginning Balances at Dec. 31, 2009	$ 1,537.3		$ 1,024.3	$ 511.7	$ 1.3
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)		1.1
Issuance of common stock upon exercise of options and under stock purchase plan	141.1		141.1
Income tax benefit from stock option exercises	57.9		57.9
Stock-based compensation expense related to employee stock plans	117.6		117.6
Repurchase and retirement of common stock (in shares)		(0.7)
Repurchase and retirement of common stock	(198.6)		(24.0)	(174.6)
Components of comprehensive income, net of tax:
Net income	381.8			381.8
Other comprehensive income (loss)	0.3				0.3
Total comprehensive income	382.1
Ending Balances (in shares) at Dec. 31, 2010		38.9
Ending Balances at Dec. 31, 2010	2,037.4		1,316.9	718.9	1.6
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)		1.4
Issuance of common stock upon exercise of options and under stock purchase plan	260.6		260.6
Income tax benefit from stock option exercises	48.6		48.6
Stock-based compensation expense related to employee stock plans	136.4		136.4
Repurchase and retirement of common stock (in shares)		(1.0)
Repurchase and retirement of common stock	(331.8)		(19.7)	(312.1)
Components of comprehensive income, net of tax:
Net income	495.1			495.1
Other comprehensive income (loss)	(0.7)				(0.7)
Total comprehensive income	$ 494.4
Ending Balances (in shares) at Dec. 31, 2011	39.3	39.3
Ending Balances at Dec. 31, 2011	$ 2,645.6		1,742.8	901.9	0.9
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)		1.3
Issuance of common stock upon exercise of options and under stock purchase plan	263.3		263.3
Income tax benefit from stock option exercises	93.9		93.9
Stock-based compensation expense related to employee stock plans	153.3		153.3
Repurchase and retirement of common stock (in shares)		(0.4)
Repurchase and retirement of common stock	(238.3)		(13.2)	(225.1)
Components of comprehensive income, net of tax:
Net income	656.6			656.6
Other comprehensive income (loss)	5.7				5.7
Total comprehensive income	$ 662.3
Ending Balances (in shares) at Dec. 31, 2012	40.2	40.2
Ending Balances at Dec. 31, 2012	$ 3,580.1		$ 2,240.1	$ 1,333.4	$ 6.6

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities:
Net income	$ 656.6	$ 495.1	$ 381.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	34.7	28.7	23.7
Amortization of intangible assets	23.1	17.8	16.7
Accretion of discounts and amortization of premiums on investments, net	33.1	22.6	17.8
Deferred income taxes	(20.8)	7.1	(21.5)
Income tax benefits from employee stock option plans	93.9	48.6	57.9
Excess tax benefit from stock-based compensation	(94.2)	(58.8)	(65.2)
Stock-based compensation expense	153.3	136.4	117.6
Changes in operating assets and liabilities, net of effects of acquisition:
Accounts receivable	(68.9)	(51.1)	(41.5)
Inventory	(7.1)	(25.3)	(29.2)
Prepaids and other assets	(37.1)	(9.4)	1.1
Accounts payable	8.4	10.3	8.1
Accrued compensation and employee benefits	21.0	19.6	13.8
Deferred revenue	30.5	28.1	26.5
Other accrued liabilities	(12.3)	7.9	38.2
Net cash provided by operating activities	814.2	677.6	545.8
Investing activities:
Purchase of investments	(1,833.9)	(1,532.2)	(1,385.4)
Proceeds from sales of investments	329.8	444.3	589.3
Proceeds from maturities of investments	800.2	691.8	397.8
Purchase of property, plant and equipment, intellectual property and business	(141.8)	(82.9)	(96.0)
Net cash used in investing activities	(845.7)	(479.0)	(494.3)
Financing activities:
Proceeds from issuance of common stock, net	263.3	260.6	141.1
Excess tax benefit from stock-based compensation	94.2	58.8	65.2
Repurchase and retirement of common stock	(238.3)	(331.8)	(198.6)
Net cash (used in) provided by financing activities	119.2	(12.4)	7.7
Effect of exchange rate changes on cash and cash equivalents	0.2	(0.2)	(0.8)
Net increase (decrease) in cash and cash equivalents	87.9	186.0	58.4
Cash and cash equivalents, beginning of year	465.8	279.8	221.4
Cash and cash equivalents, end of year	553.7	465.8	279.8
Supplemental cash flow information:
Income taxes paid	$ 226.1	$ 152.0	$ 124.4

Description of the Business

12 Months Ended

Dec. 31, 2012

Description of the Business

NOTE 1. DESCRIPTION OF THE BUSINESS

Intuitive Surgical, Inc. designs, manufactures, and markets the da Vinci Surgical System and related instruments and accessories, which taken together, are advanced surgical system that the Company believes represents a new generation of surgery. The Company believes that this new generation of surgery, which the Company calls da Vinci Surgery, combines the benefits of minimally invasive surgery (“MIS”) for patients with the ease of use, precision and dexterity of open surgery. A da Vinci Surgical System consists of a surgeon’s console, a patient-side cart and a high performance vision system. The da Vinci Surgical System translates a surgeon’s natural hand movements, which are performed on instrument controls at a console, into corresponding micro-movements of instruments positioned inside the patient through small incisions, or ports. The da Vinci Surgical System is designed to provide its operating surgeons with intuitive control, range of motion, fine tissue manipulation capability and 3-D, High-Definition (“HD”) vision while simultaneously allowing them to work through the small ports of MIS.

Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Summary Of Significant Accounting Policies

NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and accompanying Notes to Consolidated Financial Statements. The accounting estimates that require management’s most significant, difficult and subjective judgments include the valuation and recognition of investments, the valuation of the revenue and allowance for sales returns and doubtful accounts, the estimation of hedging transactions; the valuation of inventory, the assessment of recoverability of intangible assets and their estimated useful lives, the valuation and recognition of stock-based compensation and the recognition and measurement of current and deferred income tax assets and liabilities. Actual results could differ materially from these estimates.

Concentrations of Credit Risk and Other Risks and Uncertainties

The carrying amounts for financial instruments consisting of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate fair value due to their short maturities. Marketable securities and derivative instruments are stated at their estimated fair values, based on quoted market prices for the same or similar instruments. The counterparties to the agreements relating to the Company’s investment securities and derivative instruments consist of various major corporations, financial institutions, municipalities and government agencies of high credit standing.

The Company’s accounts receivable are derived from net revenue to customers and distributors located throughout the world. The Company performs credit evaluations of its customers’ financial condition and, generally, requires no collateral from its customers. The Company provides reserves for potential credit losses but has not experienced significant losses to date. As of December 31, 2012 and 2011, 79% and 77%, respectively, of accounts receivable were from domestic customers. No single customer represented more than 10% of net accounts receivable as of December 31, 2012 and 2011.

During the years ended December 31, 2012, 2011, and 2010, domestic revenue accounted for 79%, 78%, and 80%, respectively, of total revenue, while international revenue accounted for 21%, 22%, and 20%, respectively, of total revenue, for each of the years. No single customer represented more than 10% of total revenue for the years ended December 31, 2012, 2011, and 2010.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from date of purchase of 90 days or less to be cash equivalents.

Investments

Available-for-sale investments. The Company’s investments consist of U.S. treasury and U.S. government agency securities, taxable and tax exempt municipal notes, some of which may have an auction reset feature (“auction rate securities” or “ARS”), corporate notes and bonds, commercial paper, cash deposits and money market funds. The Company has designated all investments as available-for-sale and therefore, such investments are reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income. For securities sold prior to maturity, the cost of securities sold is based on the specific identification method. Realized gains and losses on the sale of investments are recorded in interest and other income, net. Investments with original maturities greater than approximately three months and remaining maturities less than one year are classified as short-term investments. Investments with remaining maturities greater than one year are classified as long-term investments.

Other-than-temporary impairment. All of the Company’s investments are subject to a periodic impairment review. The Company recognizes an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. Factors considered in determining whether a loss is temporary included the length of time and extent to which the investments fair value has been less than the cost basis, the financial condition and near-term prospects of the investee, extent of the loss related to credit of the issuer, the expected cash flows from the security, the Company’s intent to sell the security and whether or not the Company will be required to sell the security before the recovery of its amortized cost. During the years ended December 31, 2012, 2011, and 2010, the Company did not record any significant other-than-temporary impairment charges on its available-for-sale securities, because the Company does not intend to sell the security and it is not more likely than not that the Company will be required to sell these securities before the recovery of their amortized cost basis.

Fair Value Measurements

The Company measures the fair value of money market funds, corporate equity securities and certain debt securities based on quoted prices in active markets for identical assets as Level 1 securities. Marketable securities, measured at fair value using Level 2 inputs, are primarily comprised of U.S. government agencies and FDIC guaranteed securities and corporate debt securities. We review trading activity and pricing for these investments as of the measurement date. When sufficient quoted pricing for identical securities is not available, we use market pricing and other observable market inputs for similar securities obtained from various third party data providers. These inputs either represent quoted prices for similar assets in active markets or have been derived from observable market data. This approach results in the Level 2 classification of these securities within the fair value hierarchy.

Where Level 1 and Level 2 inputs are not available, the Company used a discounted cash flow model based on data available, including interest rates, timing and amount of cash flows, credit and liquidity premiums and expected holding period for Level 3 securities. The only Level 3 securities consist of municipal bonds with an ARS whose underlying assets are student loans which are substantially backed by the federal government. Since the auctions for these securities have continued to fail since February 2008, these investments are not currently trading and therefore do not have a readily determinable market value. The Company recognizes transfers into or out of Level 3 classification as of the actual date of the event or change in circumstances that caused the transfer.

Allowance for Sales Returns and Doubtful Accounts

The allowance for sales returns is based on the Company’s estimates of potential future product returns and other allowances related to current period product revenue. The Company analyzes historical returns, current economic trends and changes in customer demand and acceptance of our products. The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts. The Company regularly reviews the allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances, and current economic conditions that may affect a customer’s ability to pay.

Inventory

Inventory is stated at the lower of cost or market value on a first-in, first-out basis. Inventory costs include direct materials, direct labor, and manufacturing overhead. The Company provides inventory write-downs based on excess and obsolete inventories determined primarily by future demand forecasts.

Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Property, plant and equipment are depreciated on a straight-line basis over the estimated useful lives of the assets generally as follows:


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5 years
Computer equipment		3 years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Depreciation expense for years ended December 31, 2012, 2011, and 2010 was $34.7 million, $28.7 million, and $23.7 million, respectively.

Capitalized Software Costs for Internal Use

Internally developed software primarily includes enterprise-level business software that the Company customizes to meet its specific operational needs. The Company capitalized costs for enhancement of the enterprise resource planning software system and other internal use software of $4.1 million and $5.2 million during the years ended December 31, 2012 and 2011, respectively. Upon being placed in service, these costs are depreciated over an estimated useful life of up to 5 years.

Goodwill and Intangible Assets

Goodwill, which represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets, is not subject to amortization, but is subject to at least an annual assessment for impairment, applying a fair-value based test.

The Company’s intangible assets are comprised of purchased intellectual property. These intangible assets are carried at cost, net of accumulated amortization. Amortization is recorded using the straight-line method, over their respective useful lives, which range from approximately 1 to 9 years.

Impairment of Long-lived assets

Goodwill and intangible assets with indefinite useful lives are not amortized, but are tested for impairment at least annually or as circumstances indicate their value may no longer be recoverable. The Company does not have intangible assets with indefinite useful lives other than goodwill. Goodwill impairment test is generally performed annually during the fourth fiscal quarter (or earlier if impairment indicators arise). The Company continues to operate in one segment, which is considered to be the sole reporting unit and therefore, goodwill was tested for impairment at the enterprise level. As of December 31, 2012, there has been no impairment of goodwill.

The Company evaluates the recoverability of its long-lived assets, which include amortizable intangible and tangible assets. Acquired intangible assets with definite useful lives are amortized over their useful lives. The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of long-lived assets may not be recoverable. The Company recognizes such impairment in the event the net book value of such assets exceeds the future undiscounted cash flows attributable to such assets. No material impairment losses were incurred in the periods presented.

Revenue Recognition

The Company’s revenue consists of product revenue resulting from the sales of systems, instruments and accessories, and service revenue. The Company recognizes revenue when all four revenue recognition criteria have been met: persuasive evidence of an arrangement exists; delivery has occurred or service has been rendered; the price is fixed or determinable; and collectibility is reasonably assured. The Company’s revenue recognition policy generally results in revenue recognition at the following points:

•

System sales. For system sales directly to end customers, revenue is recognized when acceptance occurs, which is deemed to have occurred upon the receipt by the Company of a form executed by the customer acknowledging delivery or installation. For system sales through distributors, revenue is recognized upon transfer of title and risk of loss, which is generally at the time of shipment. Distributors do not have price protection rights. The Company’s system contracts do not allow rights of return. The Company’s system revenue contains a software component. Since the da Vinci Surgical System’s software and non-software elements function together to deliver the System’s essential functionality, they are considered to be one deliverable that is excluded from the software revenue recognition guidance.

•

Instruments and accessories. Revenue from sales of instruments and accessories is recognized when the product has been shipped. The Company records an allowance on instruments and accessories sales returns based on historical returns experience.

•

Service. Service contract revenue is recognized ratably over the term of the service period. Revenue related to services performed on a time-and-materials basis is recognized when it is earned and billable.

The Company determined that its multiple-element arrangements are generally comprised of the following elements that would qualify as separate units of accounting: system sales, service contracts and instruments and accessories sales.

The Company offers its customers the opportunity to trade in their older systems for credit towards the purchase of a newer generation system. The Company generally does not provide specified trade-in rights or upgrade rights at the time of system purchase. Such trade-in or upgrade transactions are separately negotiated based on the circumstances at the time of the trade-in or upgrade and are generally not based on any pre-existing rights granted by the Company. Accordingly, such trade-ins and upgrades are not considered as separate deliverables in the arrangement for a system sale.

As part of a trade-in transaction, the customer receives a new generation system in exchange for its older used system. The trade-in credit is negotiated at the time of the trade-in and is applied towards the purchase price of the new generation unit. Traded-in systems can be reconditioned and resold. The Company accounts for trade-ins consistent with the guidance in AICPA Technical Practice Aid 5100.01, Equipment Sales Net of Trade-Ins (“TPA 5100.01”). The Company applies the accounting guidance by crediting system revenue for the negotiated price of the new generation system, and the difference between (a) the trade-in allowance and (b) the amount determined by pricing the trade-in system at net realizable value minus a normal profit margin, is treated as a sales allowance. The value of the traded-in system is determined as the amount to which when reconditioning costs are added, will allow a normal profit margin on the sale of the reconditioned unit. When there is no market for the traded-in units, no value is assigned. Traded-in units are reported as a component of inventory until reconditioned and resold, or otherwise disposed.

In addition, customers may also have the opportunity to upgrade their systems, for example, by adding a fourth arm to a three-arm system, adding a second surgeon console for use with the da Vinci Si Surgical System or adding new vision systems to the Standard da Vinci and da Vinci S Surgical Systems. Such upgrades are performed by completing component level upgrades at the customer’s site. Upgrade revenue is recognized when the component level upgrades are complete and the four revenue recognition criteria are met.

For multiple-element arrangements revenue is allocated to each element based on their relative selling prices. Relative selling prices are based first on vendor specified objective evidence (“VSOE”), then on third-party evidence of selling price (“TPE”) when VSOE does not exist, and then on estimated selling price (“ESP”) when VSOE and TPE do not exist.

Because the Company has neither VSOE nor TPE for its systems, the allocation of revenue has been based on the Company’s ESPs. The objective of ESP is to determine the price at which the Company would transact a sale if the product was sold on a stand-alone basis. The Company determines ESP for its systems by considering multiple factors including, but not limited to, features and functionality of the system, geographies, type of customer, and market conditions. The Company regularly reviews ESP and maintains internal controls over the establishment and updates of these estimates.

Stock-Based Compensation

The Company accounts for stock-based employee compensation plans under the fair value recognition and measurement provisions under U.S. GAAP. The Company’s stock-based compensation cost is measured at the grant date, based on the fair value of the award, and is recognized as expense over the requisite service period. U.S. GAAP requires the cash flows resulting from the tax benefits due to tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) to be classified as financing cash flows.

Expected Term: The Company’s expected term represents the weighted-average period that the Company’s stock options are expected to be outstanding. The expected term is based on the observed and expected time to post-vesting exercise of options by employees. The Company uses historical exercise patterns of previously granted options in relation to stock price movements to derive an employee behavioral pattern used to forecast expected exercise patterns.

Expected Volatility: The Company uses market-based implied volatility. Market-based implied volatility is derived based on at least one-year traded options on the Company’s common stock. The selection of the proportion of market-based volatility depends, among other things, on the availability of traded options on the Company’s stock and term of such options. Due to sufficient volume of the traded options, the Company used 100% market-based implied volatility. The selection of the implied volatility approach was based upon the availability of traded options on the Company’s stock and the Company’s assessment that implied volatility is more representative of future stock price trends than historical volatility.

Risk-Free Interest Rate: The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for the expected term of the option.

See Note 8 for a detailed discussion of our stock-based employee compensation plans and stock-compensation expense.

Computation of Net Income per Share

Basic net income per share is computed using the weighted-average number of shares outstanding during the period. Diluted net income per share is computed using the weighted-average number of shares and dilutive potential shares outstanding during the period. Dilutive potential shares primarily consist of employee stock options.

U.S. GAAP requires that employee equity share options, non-vested shares and similar equity instruments granted by the Company be treated as potential common shares outstanding in computing diluted earnings per share. Diluted shares outstanding include the dilutive effect of in-the-money options, which is calculated based on the average share price for each fiscal period using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock options, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that would be recorded in additional-paid-in-capital (“APIC”) when the award becomes deductible are all assumed to be used to repurchase shares.

Shipping and Handling Costs

Costs incurred for shipping and handling are included in cost of revenue at the time the related revenue is recognized. Amounts billed to customers for shipping and handling is reported as revenue.

Research and Development Expenses

Research and development expenses include amortization of purchased intellectual property, costs associated with co-development R&D licensing arrangements, costs of prototypes, salaries, benefits and other headcount related costs, contract and other outside service fees, and facilities and overhead costs.

Foreign Currency and Other Hedging Instruments

For subsidiaries whose local currency is their functional currency, their assets and liabilities are translated into U.S. dollars at exchange rates at the balance sheet date and revenues and expenses are translated using average exchange rates in effect during the quarter. Gains and losses from foreign currency translation are included in accumulated other comprehensive income (loss) within stockholders’ equity in the Consolidated Balance Sheets. For all non-functional currency account balances, the re-measurement of such balances to the functional currency will result in either a foreign exchange gain or loss which is recorded to interest and other income, net in the same accounting period that the re-measurement occurred.

The Company uses derivatives to partially offset its business exposure to foreign currency exchange risk. The Company enters into foreign currency forward contracts with one to seven month terms. The Company typically hedges portions of its forecasted foreign currency exposure associated with revenue. The Company may also enter into foreign currency forward contracts to offset the foreign currency exchange gains and losses generated by re-measurement of certain assets and liabilities denominated in non-functional currencies. The hedging program is not designated for trading or speculative purposes.

The Company’s accounting policies for these instruments are based on whether the instruments are designated as hedge or non-hedge instruments. The Company records all derivatives on the Consolidated Balance Sheets at fair value. The effective portions of cash flow hedges are recorded in other comprehensive income (“OCI”) until the hedged item is recognized in earnings. Derivative instruments designated as cash flow hedges are de-designated as hedges when it is probable the forecasted hedged transaction will not occur in the initially identified time period or within a subsequent two month time period. Deferred gains and losses in OCI associated with such derivative instruments are reclassified immediately into earnings through interest and other income, net. Any subsequent changes in fair value of such derivative instruments also are reflected in current earnings.

Derivatives that are not designated as hedging instruments and the ineffective portions of cash flow hedges are adjusted to fair value through earnings in interest and other income, net.

Income Taxes

Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are expected more likely than not to be realized in the future.

The Company recognizes tax benefits from uncertain tax positions only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement.

Segments

The Company operates in one segment. Management uses one measurement of profitability and does not segregate its business for internal reporting. As of December 31, 2012 and 2011, over 97% of all long-lived assets were maintained in the United States. For the years ended December 31, 2012, 2011, and 2010, 79%, 78%, and 80%, respectively, of net revenue were generated in the United States.

Recent Accounting Pronouncements

Effective January 1, 2012, the Company elected to present net income and other comprehensive income and its components in the statement of changes in stockholders’ equity in two separate, but consecutive, statements.

Effective January 1, 2012, the Company adopted the new accounting guidance which allows a qualitative assessment on goodwill impairment to determine whether a quantitative assessment is necessary. The adoption did not have any impact on the Company’s consolidated financial statements.

In December 2011, the FASB issued an accounting standard update requiring enhanced disclosures about certain financial instruments and derivative instruments that are offset in the statement of financial position or that are subject to enforceable master netting arrangements or similar agreements. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2013, at which time the Company will include the required disclosures.

Financial Instruments

12 Months Ended

Dec. 31, 2012

Financial Instruments

NOTE 3. FINANCIAL INSTRUMENTS

Cash, Cash Equivalents and Investments

The following tables summarize the Company’s cash and available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short-term or long-term investments as of December 31, 2012 and 2011 (in millions):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2012
Cash	$	89.7		—		—			89.7		89.7		—		—
Level 1:
Money market funds		388.1		—		—			388.1		388.1		—		—
U.S. Treasuries & corporate equity securities		179.2		0.2		—			179.4		—		155.4		24.0

Subtotal		567.3		0.2		—			567.5		388.1		155.4		24.0

Level 2:
Commercial paper		157.4		—		—			157.4		75.9		81.5		—
Corporate securities		952.1		5.8		(0.4	)		957.5		—		274.6		682.9
U.S. government agencies		636.9		2.6		—			639.5		—		133.6		505.9
Non-U.S. government securities		90.8		0.5		—			91.3		—		21.8		69.5
Municipal securities		409.3		1.1		(0.2	)		410.2		—		103.8		306.4

Subtotal		2,246.5		10.0		(0.6	)		2,255.9		75.9		615.3		1,564.7

Level 3:
Municipal securities		8.0		—		(0.6	)		7.4		—		—		7.4

Subtotal		8.0		—		(0.6	)		7.4		—		—		7.4

Total assets measured at fair value	$	2,911.5		10.2		(1.2	)		2,920.5		553.7		770.7		1,596.1

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2011
Cash	$	51.6	$	—	$	—		$	51.6	$	51.6	$	—	$	—
Level 1:
Money market funds		403.2		—		—			403.2		403.2		—		—
U.S. Treasuries & corporate equity securities		183.9		0.5		—			184.4		—		130.5		53.9

Subtotal		587.1		0.5		—			587.6		403.2		130.5		53.9

Level 2:
Commercial paper		63.5		—		—			63.5		11.0		52.5		—
Corporate securities		586.6		3.0		(1.4	)		588.2		—		162.4		425.8
U.S. government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-U.S. government securities		68.7		0.4		(0.1	)		69.0		—		1.3		67.7
Municipal securities		272.1		1.1		(0.1	)		273.1		—		90.1		183.0

Subtotal		1,512.0		5.9		(1.7	)		1,516.2		11.0		432.9		1,072.3

Level 3:
Municipal securities		20.0		—		(3.6	)		16.4		—		—		16.4

Subtotal		20.0		—		(3.6	)		16.4		—		—		16.4

Total assets measured at fair value	$	2,170.7	$	6.4	$	(5.3	)	$	2,171.8	$	465.8	$	563.4	$	1,142.6

The following table summarizes the contractual maturities of the Company’s cash equivalents and available-for-sale investments, excluding corporate equity securities, at December 31, 2012 (in millions):


	Amortized Cost		Fair Value
Mature in less than one year	$	1,233.5	$	1,234.7
Mature in one to five years		1,580.3		1,588.7
Mature in after five years		8.0		7.4

Total	$	2,821.8	$	2,830.8

Net realized losses recognized on the sale of investments during the year ended December 31, 2012 was $1.9 million and during the year ended December 31, 2011 net realized gains recognized on the sale of investments was approximately $2.5 million. Net realized gains recognized on the sale of investments for the year ended December 31, 2010 was not significant.

As of December 31, 2012 and 2011, unrealized gains on investments, net of tax, of $6.2 million and $1.1 million, respectively, were included in accumulated other comprehensive income in the accompanying Consolidated Balance Sheets.

The following tables present the breakdown of the available-for-sale investments with unrealized losses at December 31, 2012 and 2011 (in millions):


	Unrealized losses less than 12 months					Unrealized losses 12 months or greater					Total
December 31, 2012	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Corporate securities	$	148.5	$	(0.2	)	$	8.4	$	(0.2	)	$	156.9	$	(0.4	)
Municipal securities		127.0		(0.2	)		—		—			127.0		(0.2	)
Commercial paper		27.1		—			—		—			27.1		—
Non-U.S. government securities		3.8		—			—		—			3.8		—
U.S. government agencies		15.3		—			—		—			15.3		—
Municipal securities		—		—			7.4		(0.6	)		7.4		(0.6	)

	$	321.7	$	(0.4	)	$	15.8	$	(0.8	)	$	337.5	$	(1.2	)

December 31, 2011
U.S. government agencies	$	168.8	$	(0.1	)	$	—	$	—		$	168.8	$	(0.1	)
Municipal securities		48.0		(0.1	)		—		—			48.0		(0.1	)
Auction rate securities		—		—			16.4		(3.6	)		16.4		(3.6	)
Non-U.S. government securities		34.5		(0.1	)		—		—			34.5		(0.1	)
Corporate securities		212.1		(1.4	)		—		—			212.1		(1.4	)

	$	463.4	$	(1.7	)	$	16.4	$	(3.6	)	$	479.8	$	(5.3	)

The unrealized losses on the available-for-sale investments are related to ARS and corporate securities. The Company determined these unrealized losses to be temporary and recorded no other-than-temporary impairments. Factors considered in determining whether a loss is temporary included the length of time and extent to which the investments fair value has been less than the cost basis; the financial condition and near-term prospects of the investee; extent of the loss related to credit of the issuer; the expected cash flows from the security; the Company’s intent to sell the security and whether or not the Company will be required to sell the security before the recovery of its amortized cost.

The following table provides reconciliation for all assets measured at fair value using significant unobservable Level 3 inputs for the years ended December 31, 2012 and 2011 (in millions):


	Fair Value Measurements at Reporting Date Using Significant Unobservable Inputs (Level 3)
	Municipal securities
Balance at January 1, 2011	$	18.6
Sales		(2.6	)
Total gains or (losses):
Included in other comprehensive income (loss)		0.4
Included in earnings		—

Balance at December 31, 2012		16.4
Sales		(12.0	)
Total gains or (losses):
Included in other comprehensive income (loss)		3.0
Included in earnings		—

Balance at December 31, 2012	$	7.4

There have been no transfers between Level 1 and Level 2 measurements during the year ended December 31, 2012, and there were no changes in the Company’s valuation technique. Level 3 assets consist of municipal bonds with ARS whose underlying assets are student loans which are substantially backed by the federal government. Since the auctions for these securities have continued to fail since February 2008, these investments are not currently trading and therefore do not have a readily determinable market value. The Company has valued the ARS using a discounted cash flow model based on Level 3 assumptions, including estimates of, based on data available as of December 31, 2012, interest rates, timing and amount of cash flows, credit and liquidity premiums and expected holding periods of the ARS.

Foreign currency derivative

The Company has $2.7 million of derivative liabilities recorded as other accrued liabilities in the Consolidated Balance Sheet at December 31, 2012, compared to $3.5 million of derivative assets recorded as prepaid and other assets in the Consolidated Balance Sheet at December 31, 2011. The derivative assets and liabilities are measured using Level 2 fair value inputs.

Cash Flow Hedges

The Company enters into currency forward contracts as cash flow hedges to hedge certain forecasted revenue transactions denominated in currencies other than the U.S. dollar, primarily the European Euro (“Euro or €”), the British Pound (“GBP or £”) and the Korean Won (“KRW”).

As of December 31, 2012, the Company had notional amounts of €20.0 million and KRW4.4 billion of outstanding currency forward contracts entered into to hedge Euro and KRW denominated sales, compared to none at December 31, 2011. The net gains (losses) reclassified to revenue related to the hedged revenue transactions for the years ended December 31, 2012, 2011, and 2010, were not significant. Other impacts of derivative instruments designated as cash flow hedges were not significant for the years ended December 31, 2012, 2011, and 2010.

Other Derivatives Not Designated as Hedging Instruments

Other derivatives not designated as hedging instruments consist primarily of forward contracts that the Company uses to hedge intercompany balances and other monetary assets or liabilities denominated in currencies other than the U.S. dollar, primarily the Euro, GBP, the Swiss Franc (“CHF”) and the KRW.

As of December 31, 2012, the Company had the notional amount of €37.6 million, £5.4 million, CHF(1.0) million and KRW4.6 billion of outstanding currency forward contracts that were entered into to hedge non-functional currency denominated net monetary assets and liabilities, compared to €35.0 million and £1.8 million and CHF (1.7) million at December 31, 2011. For the years ended December 31, 2012, 2011 and 2010, the Company had recognized gains (losses) of approximately $(0.7) million and $(1.2) million and $3.1 million, respectively in interest and other income, net related to derivative instruments used to hedge against balance sheet foreign currency exposures. This was offset by approximately $0.3 million, $0.3 million and $(2.6) million of net foreign exchange gains (losses) for the years ended December 31, 2012, 2011 and 2010, respectively, primarily related to the re-measurement of non-functional currency denominated net monetary assets and liabilities.

Balance Sheet Details

12 Months Ended

Dec. 31, 2012

Balance Sheet Details

NOTE 4. BALANCE SHEET DETAILS

The following table provides details of selected balance sheet items (in millions):


	December 31,
	2012			2011
Inventory:
Raw materials	$	41.2		$	34.8
Work-in-process		4.4			2.5
Finished goods		75.9			74.8

Total inventory	$	121.5		$	112.1

Property, plant and equipment, net:
Land	$	83.6		$	72.1
Building and building/leasehold improvements		99.1			88.1
Machinery and equipment		105.0			68.0
Computer and office equipment		19.2			15.7
Capitalized software		53.9			50.5
Construction-in-process		15.4			11.4

		376.2			305.8
Less: Accumulated depreciation		(134.4	)		(108.6	)

Total property, plant and equipment, net	$	241.8		$	197.2

Other accrued liabilities—short term:
Other accrued liabilities	$	44.6		$	24.8
Taxes payable		5.8			8.5
Accrued professional fees		3.9			4.2

Total other accrued liabilities—short-term	$	54.3		$	37.5

Other long-term liabilities:
Income taxes—long term	$	76.7		$	95.9
Other long-term liabilities		0.8			1.0

Total other long-term liabilities	$	77.5		$	96.9

Goodwill And Intangible Assets

12 Months Ended

Dec. 31, 2012

Goodwill And Intangible Assets

NOTE 5. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The Company acquired completed its Korean distributor on January 11, 2012. The total purchase consideration of the acquisition was not material, and the acquisition has not had a material impact on the results of our operations. The Company’s gross carrying amount of goodwill was $138.1 million and $116.9 million as of December 31, 2012 and 2011, respectively.

Intangibles

The gross carrying amount of total intangible assets, primarily representing purchased intellectual property, was $177.7 million and $136.1 million as of December 31, 2012 and 2011, respectively.

Additions made to intangibles assets, including intellectual property and asset purchase, during the years ended December 31, 2012 and 2011 were $41.6 million and $16.8 million, respectively. The weighted average useful life was six years for each of the years ended December 31, 2012 and 2011. Amortization expense related to intangible assets was $23.1 million, $17.8 million, and $16.7 million for the years ended December 31, 2012, 2011, and 2010, respectively. Accumulated amortization of intangible assets was $94.1 million and $71.0 million as of December 31, 2012 and 2011, respectively.

The estimated future amortization expense of intangible assets as of December 31, 2012 is as follows (in millions):


Fiscal Year	Amount
2013	$	21.1
2014		17.5
2015		17.3
2016		14.4
2017		8.4
2018 and thereafter		4.9

Total	$	83.6

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Commitments And Contingencies

12 Months Ended

Dec. 31, 2012

Commitments And Contingencies

NOTE 6. COMMITMENTS AND CONTINGENCIES

OPERATING LEASES

The Company leases office space in China, Japan, Mexico, Switzerland and United States. The Company leases automobiles for certain sales and field service employees. These leases have varying terms, predominantly no longer than three years.

Future minimum lease commitments under the Company’s operating leases as of December 31, 2012 are as follows (in millions):


Years	Amount
2013	$	3.8
2014		2.9
2015		1.2
2016		0.4
2017 and beyond		0.2

	$	8.5

Other commitments include an estimated amount of approximately $292.2 million of all open cancellable purchase orders and contractual obligations that occur in the ordinary course of business, including commitments with suppliers, for which we have not received the goods or services.

CONTINGENCIES

On August 6, 2010, a purported class action lawsuit entitled Perlmutter v. Intuitive Surgical et al., No. CV10-3451, was filed against the Company and seven of the Company’s current and former officers and directors in the United States District Court for the Northern District of California. The lawsuit seeks unspecified damages on behalf of a putative class of persons who purchased or otherwise acquired the Company’s common stock between February 1, 2008 and January 7, 2009. The complaint alleges that the defendants violated federal securities laws by making allegedly false and misleading statements and omitting certain material facts in the Company’s filings with the Securities and Exchange Commission. On February 15, 2011, the Police Retirement System of St. Louis was appointed Lead Plaintiff in the case pursuant to the Private Securities Litigation Reform Act of 1995. An amended complaint was filed on April 15, 2011, making allegations substantially similar to the allegations described above. On May 23, 2011 the Company filed a motion to dismiss the amended complaint. On August 10, 2011 that motion was granted and the action was dismissed; the plaintiffs were given 30 days to file an amended complaint. On September 12, 2011, plaintiffs filed their amended complaint. The allegations contained therein are substantially similar to the allegations in the prior complaint. The Company filed a motion to dismiss the amended complaint. A hearing occurred on February 16, 2012, and on May 22, 2012 the Company’s motion was granted. The complaint was dismissed with prejudice, and a final judgment was entered in the Company’s favor on June 1, 2012. Plaintiffs filed a notice of appeal on June 20, 2012. On June 20, 2012, Plaintiffs filed a notice of appeal with the United States Court of Appeals for the Ninth Circuit. The appeal is styled Police Retirement System of St. Louis v. Intuitive Surgical, Inc. et al., No. 12-16430. Plaintiffs filed their opening brief on September 28, 2012. The Company filed an answering brief on November 13, 2012, and Plaintiffs filed a reply brief on December 17, 2012. No oral argument date has been set, and the appeal remains pending.

On August 19, 2010, an alleged stockholder caused a purported stockholder’s derivative lawsuit entitled Himmel v. Smith et al., No. 1-10-CV-180416, to be filed in the Superior Court of California for the County of Santa Clara naming the Company as a nominal defendant, and naming 14 of the Company’s current and former officers and directors as defendants. The lawsuit seeks to recover, for the Company’s benefit, unspecified damages purportedly sustained by the Company in connection with allegedly misleading statements and/or omissions made in connection with the Company’s financial reporting for the period between February 1, 2008 and January 7, 2009. It also seeks a series of changes to the Company’s corporate governance policies and an award of attorneys’ fees. On September 15, 2010, another purported stockholder filed an essentially identical lawsuit entitled Applebaum v. Guthart et al., No. 1-10-CV-182645, in the same court against 15 of the Company’s current and former officers and directors. On October 5, 2010 the court ordered that the two cases be consolidated for all purposes. By agreement with the plaintiffs, all activity in the case has been stayed pending the results of the appeal in the purported shareholder class action lawsuit discussed above.

Due to the uncertainty surrounding the litigation process, the Company is unable to reasonably estimate the ultimate outcome of the above cases at this time, and therefore no amounts have been accrued related to the outcome of the cases above. Based on currently available information, the Company believes that it has meritorious defenses to the above actions and that the resolution of these cases is not likely to have a material adverse effect on the Company’s business, financial position or future results of operations.

The Company is also a party to various other legal actions that arose in the ordinary course of its business. The Company does not believe that any of these other legal actions will have a material adverse impact on its business, financial position or results of operations.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stockholders' Equity

12 Months Ended

Dec. 31, 2012

Stockholders' Equity

NOTE 7. STOCKHOLDERS’ EQUITY

STOCK REPURCHASE PROGRAM

In July 2010, the Board authorized the repurchases of an additional $150 million of the Company’s common stock under a share repurchase program originally established in March of 2009. In February 2011 and October 2011, the Board increased its authorization for stock repurchases to $400 million and $500 million, respectively. As of December 31, 2012, the remaining authorized amount of share repurchases that may be made under the Board-authorized share repurchase program was approximately $329.8 million.

The following table provides the stock repurchase activities during the years ended December 31, 2012, 2011, and 2010 (in millions, except per share amounts):


	Years Ended December 31,
	2012		2011		2010
Shares repurchased		0.4		1.0		0.7
Average price per share	$	503.05	$	344.72	$	267.81
Value of shares repurchased	$	238.3	$	331.8	$	198.6

The Company uses the par value method of accounting for its stock repurchases. As a result of the share repurchases during the years ended December 31, 2012, 2011, and 2010, the Company reduced common stock and additional paid-in capital by an aggregate of $13.2 million, $19.7 million, and $24.0 million, respectively, and charged $225.1 million, $312.1 million, $174.6 million, respectively, to retained earnings.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Stock-Based Compensation

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation

NOTE 8. STOCK-BASED COMPENSATION

STOCK OPTION PLANS

2010 Incentive Award Plan

In April 2010, the Company’s stockholders approved the 2010 Incentive Award Plan (“2010 Plan”). Under this plan, the Company issues nonqualified stock options (“NSOs”) to employees and certain consultants. The 2010 Plan generally permits NSOs to be granted at no less than the fair market value of the common stock on the date of grant, with terms of 10 years from the date of grant. The 2010 Plan expires in 2020. As of December 31, 2012, approximately 1.5 million shares were reserved for future issuance under the 2010 Plan.

2009 Employment Commencement Incentive Plan

In October 2009, the Board of Directors adopted the 2009 Employment Commencement Incentive Plan (“New Hire Plan”). The New Hire Plan provides for the shares to be used exclusively for the grant of NSOs to new employees (“New Hire Options”)., who were not previously an employee or non-employee director of the Company. Options are granted at an exercise price not less than the fair market value of the stock on the date of grant and have a term not to exceed ten years. As of December 31, 2012, approximately 20,000 shares were reserved for future issuance under the New Hire Plan.

2000 Equity Incentive Plan

In March 2000, the Board of Directors adopted the 2000 Equity Incentive Plan (“2000 Plan”), which took effect upon the closing of the Company’s initial public offering. Under this plan, certain employees, consultants and non-employee directors may be granted Incentive Stock Options (“ISOs”) and Nonstatutory Stock Options (“NSOs”) to purchase shares of the Company’s common stock. The 2000 Plan permitted ISOs to be granted at an exercise price not less than the fair value on the date of the grant and NSOs at an exercise price not less than 85% of the fair value on the date of grant. Options granted under the 2000 Plan generally expire 10 years from the date of grant and become exercisable upon grant subject to repurchase rights in favor of the Company until vested. The 2000 Plan expired in March 2010. However, options granted prior to the plan’s expiration continue to vest or remain outstanding until their original expiration date.

Employee Option Vesting

Prior to 2012, stock options were granted to employees at their start date (“New Hire Options”) and on February 15^th of each year or the next business day if the date is not a business day (“Annual Grant”). The Annual Grant and New Hire Options generally vest 12.5% upon completion of 6 months service and 1/48^th per month thereafter. Beginning in 2013, the Company split the annual grant into a grant on February 15^th (or the next business day if the date is not a business day) and a separate grant on August 15^th (or the next business day if the date is not a business day). The February 15^th grants vest 12.5% upon completion of 6 months service and 1/48^th per month thereafter. The August 15^th stock option awards vest 7/48 at the end of one month and 1/48 per month thereafter through a 3.5 year vesting period. Option vesting terms are determined by the Board of Directors and, in the future, may vary from past practices.

2000 Non-Employee Directors’ Stock Option Plan

In March 2000, the Board of Directors adopted the 2000 Non-Employee Directors’ Stock Option Plan (the “Directors’ Plan”). In October 2009, the automatic evergreen increase provisions were eliminated so that no further automatic increases will be made to the number of shares reserved for issuance under the Directors’ Plan. In addition, the common stock authorized for issuance under the Directors’ Plan was reduced to 150,000. Options are granted at an exercise price not less than the fair market value of the stock on the date of grant and have a term not to exceed 10 years. Initial grants are vested over a three-year period with 33.3% of the shares vesting after 1 year from the date of grant and 1/36^th of the shares vesting monthly thereafter. Annual grants are vested one year from the date of the grant. As of December 31, 2012, approximately 82,000 shares were reserved for future issuance under the Directors’ Plan.

2000 Employee Stock Purchase Plan

In March 2000, the Board of Directors adopted the 2000 Employee Stock Purchase Plan (ESPP). Employees are generally eligible to participate in the ESPP if they are customarily employed by the Company for more than 20 hours per week and more than 5 months in a calendar year and are not 5% stockholders of the Company. Under the ESPP, eligible employees may select a rate of payroll deduction up to 15% of their eligible compensation subject to certain maximum purchase limitations. The duration for each offering period is twenty-four months long and is divided into four shorter purchase periods approximately six months in length. Offerings are concurrent. The purchase price of the shares under the offering is the lesser of 85% of the fair market value of the shares on the offering date or 85% of the fair market value of the shares on the purchase date. A two-year look-back feature in the ESPP causes the offering period to reset if the fair value of the Company’s common stock on the first or last day of the purchase period is less than that on the original offering date. ESPP purchases by employees are settled with newly-issued common stock from the ESPP’s previously authorized and available pool of shares.

The Company issued 0.1 million, 0.1 million and 0.1 million shares under the ESPP, representing approximately $27.8 million, $18.5 million, and $14.3 million in employee contributions for the years ended December 31, 2012, 2011, and 2010, respectively. As of December 31, 2012, there were approximately 0.5 million shares reserved for grant under the ESPP.

STOCK OPTION PLAN INFORMATION

Option activity during fiscal 2012 under all the stock plans was as follows (in millions, except per share amounts):


				STOCK OPTIONS OUTSTANDING
	Shares Available for Grant			Number Outstanding			Weighted Average Exercise Price Per Share
Balance at December 31, 2011 (with 2.4 options exerciseable at a weighted-average exercise price of $212.43 per share and with 4.5 options vested and expected to vest at a weighted-average exercise price of $252.57 per share)		1.6			4.7		$	254.19
Options authorized		1.4			—
Options granted		(1.4	)		1.4			513.25
Options exercised		—			(1.2	)		203.48
Options forfeited/expired		0.1			(0.1	)		371.29

Balance at December 31, 2012 (with 2.5 options exerciseable at a weighted-average exercise price of $268.31 per share and with 4.8 options vested and expected to vest at a weighted-average exercise price of $340.83 per share)		1.7			4.8		$	340.83

The aggregate intrinsic value of options exercised under our stock option plans determined as of the date of option exercise was $375.7 million, $262.8 million, and $192.9 million during the years ended December 31, 2012, 2011, and 2010 respectively. Cash received from option exercises and employee stock purchase plans for the years ended December 31, 2012, 2011, and 2010 was $263.3 million, $260.6 million, $141.1 million, respectively.

The following table summarizes significant ranges of outstanding and exercisable options as of December 31, 2012 (number of shares in millions):


	Options Outstanding								Options Exercisable
Range of Exercise Prices	Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)		Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)
$0.00–$260.65		1.0		5.11	$	117.67				0.9			$	113.33
$264.15–$334.30		1.3		6.46		318.02				1.0				315.11
$341.19–$365.98		1.0		8.05		343.52				0.4				344.75
$368.70–$517.31		1.3		9.31		501.12				0.3				499.46
$518.29–$579.24		0.2		9.58		545.91				0.0				551.72

TOTAL		4.8		7.40	$	340.83	$	746.9		2.5		6.34	$	268.31	$	567.6

(1)	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company’s closing stock price of $490.37 as of December 31, 2012, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

As of December 31, 2012, the shares vested and expected to vest had a weighted average remaining contractual life of 7.4 years and aggregate intrinsic value of $746.9 million.

STOCK-BASED COMPENSATION EXPENSE:

The following table summarizes stock-based compensation expense (in millions):


	Years Ended December 31,
	2012		2011		2010
Cost of sales—products	$	14.1	$	12.3	$	9.6
Cost of sales—services		12.9		11.0		8.4

Total cost of sales		27.0		23.3		18.0
Selling, general and administrative		93.1		84.3		77.0
Research and development		33.2		28.8		22.6

Stock-based compensation expense before income taxes		153.3		136.4		117.6
Income tax effect		47.5		42.9		39.2

Stock-based compensation expense after income taxes	$	105.8	$	93.5	$	78.4

The Black-Scholes option pricing model is used to estimate the fair value of stock options granted under the Company’s stock-based compensation plans and rights to acquire stock granted under the Company’s employee stock purchase plan. The weighted average estimated fair values of the stock options and rights to acquire stock granted under the Company’s employee purchase plan as well as the weighted average assumptions used in calculating these values during the years ended December 31, 2012, 2011, and 2010, were based on estimates at the date of grant as follows:


	Years Ended December 31,
STOCK OPTION PLANS	2012			2011			2010
Average risk free interest rate		0.80	%		2.16	%		2.24	%
Average expected term (years)		4.34			4.75			4.80
Average volatility		33	%		35	%		36	%
Weighted average fair value at grant date	$	146.26		$	116.03		$	111.84
Total stock-based compensation expense (in millions)	$	139.9		$	128.3		$	109.1

EMPLOYEE STOCK PURCHASE PLAN
Average risk free interest rate		0.17	%		0.32	%		0.43	%
Average expected term (years)		1.3			1.30			1.30
Average volatility		32	%		33	%		39	%
Weighted average fair value at grant date	$	138.61		$	99.94		$	106.72
Total stock-based compensation expense (in millions)	$	13.4		$	8.1		$	8.5

As stock-based compensation expense recognized in the Consolidated Statements of Income during the years ended December 31, 2012, 2011, and 2010 is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. Stock compensation accounting requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimated.

As of December 31, 2012, there was $281.4 million and $4.4 million, of total unrecognized compensation expense related to non-vested stock options and employee stock purchases, respectively. The unrecognized compensation expenses are expected to be recognized over a weighted average period of 2.5 years for non-vested stock options and 1 year for employee stock purchases.

Excess tax benefits are realized tax deductions for exercised options in excess of the deferred tax asset attributable to stock compensation costs for such options. Excess tax benefits of $94.2 million, $58.8 million, and $65.2 million for the years ended December 31, 2012, 2011, and 2010, respectively, have been classified as a financing cash inflow. The total income tax benefit recognized in the income statement for stock-based compensation costs was $47.5 million, $42.9 million, and $39.2 million for the years ended December 31, 2012, 2011, and 2010, respectively.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes

12 Months Ended

Dec. 31, 2012

Income Taxes

NOTE 9. INCOME TAXES

Income before provision for income taxes for the years ended December 31, 2012, 2011, and 2010 consisted of the following (in millions):


	Years Ended December 31,
	2012		2011		2010
U.S	$	718.5	$	540.3	$	438.7
Foreign		175.4		169.4		133.6

Total income before provision for income taxes	$	893.9	$	709.7	$	572.3

The provision for income taxes for the years ended December 31, 2012, 2011, and 2010 consisted of the following (in millions):


	Years Ended December 31,
	2012			2011			2010
Current
Federal	$	239.9		$	195.7		$	189.9
State		17.0			8.1			20.0
Foreign		3.4			3.7			2.1

	$	260.3		$	207.5		$	212.0

Deferred
Federal	$	(20.6	)	$	6.8		$	(22.2	)
State		(1.2	)		0.4			0.5
Foreign		(1.2	)		(0.1	)		0.2

	$	(23.0	)	$	7.1		$	(21.5	)

Total income tax expense	$	237.3		$	214.6		$	190.5

Income tax expense differs from amounts computed by applying the statutory rate of 35% for the years ended December 31, 2012, 2011, and 2010 as a result of the following (in millions):


	Years Ended December 31,
	2012			2011			2010
Federal tax at statutory rate	$	312.9		$	248.3		$	200.3
Increase (reduction) in tax resulting from:
State taxes, net of federal benefits		15.8			8.5			20.5
Foreign rate differential		(42.8	)		(47.7	)		(31.3	)
Research and development credit		—			(6.6	)		(4.6	)
Stock compensation not benefitted		5.9			5.1			4.8
Domestic production activities deduction		(8.2	)		—			—
Releases due to statute expirations and other		(46.5	)		—			—
Other		0.2			7.0			0.8

	$	237.3		$	214.6		$	190.5

Deferred income taxes reflect tax carry forwards and the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets are as follows (in millions):


	December 31,
	2012			2011
Deferred tax assets:
Stock-based compensation expense	$	85.3		$	69.2
Expenses deducted in later years for tax purposes		25.9			19.6
Research and other credits		5.3			2.1
Other		1.2			0.5

Gross deferred tax assets	$	117.7		$	91.4
Valuation allowance		(6.0	)		(2.8	)

Deferred tax assets	$	111.7		$	88.6

Deferred tax liabilities:
Fixed assets	$	(12.3	)	$	(11.8	)
Identified intangible assets related to acquisitions		(2.2	)		—
Other		(3.8	)		(1.5	)

Deferred tax liabilities	$	(18.3	)	$	(13.3	)

Net deferred tax assets	$	93.4		$	75.3

The Company has not provided U.S. income taxes and foreign withholding taxes on the undistributed earnings of its foreign subsidiaries as of December 31, 2012 because the Company intends to permanently reinvest such earnings outside the U.S. If these foreign earnings were to be repatriated in the future, the related U.S. tax liability may be reduced by any foreign income taxes previously paid on these earnings. As of December 31, 2012, the cumulative amount of earnings upon which U.S. income taxes have not been provided is approximately $421.8 million. Determination of the amount of unrecognized deferred tax liability related to these earnings is not practicable at this time. The Company has a tax holiday in effect for its business operations in Switzerland which will continue until the end of year 2017 to the extent certain terms and conditions continue to be met. This tax holiday provides for a lower rate of taxation in Switzerland based on various thresholds of investment and employment in such jurisdiction. The Company has been in compliance with the terms of the holiday.

As of December 31, 2012 and 2011, we had valuation allowances of $6.0 million and $2.8 million, respectively, primarily related to California deferred tax assets generated by California R&D credit forwards which have no expiration period. The Company recorded a valuation allowance against its California deferred tax assets as it is more likely than not these deferred tax assets will not be realized as a result of the computation of California taxes under the single sales factor. We will continue to monitor and reassess the need for further increases or decreases to the valuation allowance.

The Company recorded a net decrease of its gross unrecognized tax benefits of approximately $10.1 million during the year ended December 31, 2012. The net decrease was primarily related to the reversal of gross unrecognized tax benefits of $32.2 million in connection with the expiration of certain statutes of limitations in multiple jurisdictions in the second half of 2012, and the release of $8.3 million of gross unrecognized tax benefits due to re-evaluation of certain previously unrecognized tax benefits as a result of new IRS guidance issued in the first quarter of 2012, partially offset by increases during the year 2012 related to other uncertain tax positions. The Company had gross unrecognized tax benefits of approximately $88.0 million, $98.1 million, and $78.9 million as of December 31, 2012, 2011, and 2010, respectively, of which $83.8 million, $93.8 million, and $74.7 million, if recognized would result in a reduction of the Company’s effective tax rate during the years ended December 31, 2012, 2011, and 2010, respectively. The Company included interest expense and penalties accrued on unrecognized tax benefits as a component of its income tax expense. As of December 31, 2012, 2011, and 2010, gross interest related to unrecognized tax benefits accrued was approximately $3.2 million, $7.9 million, and $5.5 million, respectively, and a net decrease of $4.7 million was included in the Company’s 2012 income tax expense as a result of $6.1 million decrease related to the above-mentioned decreases in unrecognized tax benefits, offset by $1.4 million increase related to other unrecognized tax positions. The Company classified its net unrecognized tax benefits and related interest in “Other accrued liabilities” on the Consolidated Balance Sheet.

A reconciliation of the beginning and ending amounts of gross unrecognized income tax benefits for the years ended December 31, 2012, 2011, and 2010 are as follows (in millions):


	Years Ended December 31,
	2012			2011		2010
Beginning balance	$	98.1		$	78.9	$	70.0
Increases related to tax positions taken during the current year		17.5			18.1		9.1
Increases related to tax positions taken during a prior year		12.9			1.1		—
Decreases related to tax positions taken during a prior year		(8.3	)		—		(0.2	)
Decreases related to expiration of statute of limitations		(32.2	)		—		—

Ending balance	$	88.0		$	98.1	$	78.9

The Company files federal, state and foreign income tax returns in many jurisdictions in the United States and abroad. Generally, years before 2009 are closed for most significant jurisdictions except for California, for which all years since inception remain open due to utilization of net operating losses and R&D credits generated in prior years or longer statutes of limitations. Certain of the Company’s unrecognized tax benefits could reverse based on the normal expiration of various statutes of limitations, which could affect the Company’s effective tax rate in the period in which they reverse.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Net Income Per Share

12 Months Ended

Dec. 31, 2012

Net Income Per Share

NOTE 10. NET INCOME PER SHARE

The following table presents the computation of basic and diluted net income per share (in millions, except per share amounts):


	Years Ended December 31,
	2012		2011		2010
Net income	$	656.6	$	495.1	$	381.8
Basic:
Weighted-average shares outstanding		39.8		39.2		39.2

Basic net income per share	$	16.50	$	12.63	$	9.74

Diluted:
Weighted-average shares outstanding used in basic calculation		39.8		39.2		39.2
Add: Dilutive potential shares		1.3		1.0		1.1

Weighted-average shares used in computing diluted net income per share		41.1		40.2		40.3

Diluted net income per share	$	15.98	$	12.32	$	9.47

Employee stock options to purchase approximately 0.9 million, 2.1 million, and 1.3 million shares for the years ended December 31, 2012, 2011, and 2010, respectively, were outstanding, but were not included in the computation of diluted net income per share because the effect of including such shares would have been antidilutive in the periods presented.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2012

Employee Benefit Plans

NOTE 11. EMPLOYEE BENEFIT PLANS

The Company sponsors various retirement plans for its eligible U.S. and non-U.S. employees. For employees in the U.S., the Company maintains the Intuitive Surgical, Inc. 401(k) Plan (the “Plan”). As allowed under Section 401(k) of the Internal Revenue Code, the Plan provides tax-deferred salary contributions for eligible U.S. employees. The Plan allows employees to contribute up to 75% of their annual compensation to the Plan on a pretax and after-tax basis. Employee contributions are limited to a maximum annual amount as set periodically by the Internal Revenue Code. Employer matching contributions are made solely at the Company’s discretion. No employer matching contributions were made to the Plan during the years ended December 31, 2012, 2011, and 2010.

Selected Quarterly Data

12 Months Ended

Dec. 31, 2012

Selected Quarterly Data

SELECTED QUARTERLY DATA

(UNAUDITED, IN MILLIONS, EXCEPT PER SHARE AMOUNTS)


	2012
	Q1		Q2		Q3		Q4
Revenue	$	495.2	$	536.5	$	537.8	$	609.3
Gross profit	$	355.9	$	386.4	$	390.1	$	437.9
Net income	$	143.5	$	154.9	$	183.3	$	174.9
Net income per common share
Basic	$	3.63	$	3.88	$	4.59	$	4.37
Diluted	$	3.50	$	3.75	$	4.46	$	4.25

	2011
	Q1		Q2		Q3		Q4
Revenue	$	388.1	$	425.7	$	446.7	$	496.8
Gross profit	$	278.8	$	306.6	$	325.5	$	362.9
Net income	$	104.1	$	117.4	$	122.4	$	151.2
Net income per common share
Basic	$	2.66	$	2.99	$	3.13	$	3.86
Diluted	$	2.59	$	2.91	$	3.05	$	3.75

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2012

Valuation And Qualifying Accounts

SCHEDULE II

INTUITIVE SURGICAL, INC.

VALUATION AND QUALIFYING ACCOUNTS

(IN MILLIONS)


	Balance at Beginning of Year		Additions		Deductions (1)			Balance at End of Year
Allowance for doubtful accounts and sales returns
Year ended December 31, 2012	$	5.6	$	11.8	$	(12.4	)	$	5.0
Year ended December 31, 2011	$	4.8	$	12.3	$	(11.5	)	$	5.6
Year ended December 31, 2010	$	4.3	$	11.3	$	(10.8	)	$	4.8

(1)	Primarily represents amounts returned.

Summary Of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Basis of Presentation

Basis of Presentation

Use of Estimates

Use of Estimates

Concentrations of Credit Risk and Other Risks and Uncertainties

Concentrations of Credit Risk and Other Risks and Uncertainties

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity from date of purchase of 90 days or less to be cash equivalents.

Investments

Investments

Fair Value Measurements

Fair Value Measurements

Allowance for Sales Returns and Doubtful Accounts

Allowance for Sales Returns and Doubtful Accounts

Inventory

Inventory

Property, Plant and Equipment

Property, Plant and Equipment


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5 years
Computer equipment		3 years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Depreciation expense for years ended December 31, 2012, 2011, and 2010 was $34.7 million, $28.7 million, and $23.7 million, respectively.

Capitalized Software Costs for Internal Use

Capitalized Software Costs for Internal Use

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Impairment of Long-lived assets

Impairment of Long-lived assets

Revenue Recognition

Revenue Recognition

•

Stock-Based Compensation

Stock-Based Compensation

Risk-Free Interest Rate: The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for the expected term of the option.

See Note 8 for a detailed discussion of our stock-based employee compensation plans and stock-compensation expense.

Computation of Net Income per Share

Computation of Net Income per Share

Shipping and Handling Costs

Shipping and Handling Costs

Costs incurred for shipping and handling are included in cost of revenue at the time the related revenue is recognized. Amounts billed to customers for shipping and handling is reported as revenue.

Research and Development Expenses

Research and Development Expenses

Foreign Currency and Other Hedging Instruments

Foreign Currency and Other Hedging Instruments

Derivatives that are not designated as hedging instruments and the ineffective portions of cash flow hedges are adjusted to fair value through earnings in interest and other income, net.

Income Taxes

Income Taxes

Segments

Segments

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Estimated Useful Lives Of The Assets

Property, plant and equipment are depreciated on a straight-line basis over the estimated useful lives of the assets generally as follows:


		Useful Lives
Building		up to 30 years
Building improvements		up to 15 years
Leasehold improvements		Lesser of useful life or term of lease
Equipment and furniture		5 years
Computer equipment		3 years
Enterprise-wide software		up to 5 years
Purchased software		Lesser of 3 years or life of license

Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Cash and Available-For-Sale Securities


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2012
Cash	$	89.7		—		—			89.7		89.7		—		—
Level 1:
Money market funds		388.1		—		—			388.1		388.1		—		—
U.S. Treasuries & corporate equity securities		179.2		0.2		—			179.4		—		155.4		24.0

Subtotal		567.3		0.2		—			567.5		388.1		155.4		24.0

Level 2:
Commercial paper		157.4		—		—			157.4		75.9		81.5		—
Corporate securities		952.1		5.8		(0.4	)		957.5		—		274.6		682.9
U.S. government agencies		636.9		2.6		—			639.5		—		133.6		505.9
Non-U.S. government securities		90.8		0.5		—			91.3		—		21.8		69.5
Municipal securities		409.3		1.1		(0.2	)		410.2		—		103.8		306.4

Subtotal		2,246.5		10.0		(0.6	)		2,255.9		75.9		615.3		1,564.7

Level 3:
Municipal securities		8.0		—		(0.6	)		7.4		—		—		7.4

Subtotal		8.0		—		(0.6	)		7.4		—		—		7.4

Total assets measured at fair value	$	2,911.5		10.2		(1.2	)		2,920.5		553.7		770.7		1,596.1

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
December 31, 2011
Cash	$	51.6	$	—	$	—		$	51.6	$	51.6	$	—	$	—
Level 1:
Money market funds		403.2		—		—			403.2		403.2		—		—
U.S. Treasuries & corporate equity securities		183.9		0.5		—			184.4		—		130.5		53.9

Subtotal		587.1		0.5		—			587.6		403.2		130.5		53.9

Level 2:
Commercial paper		63.5		—		—			63.5		11.0		52.5		—
Corporate securities		586.6		3.0		(1.4	)		588.2		—		162.4		425.8
U.S. government agencies		521.1		1.4		(0.1	)		522.4		—		126.6		395.8
Non-U.S. government securities		68.7		0.4		(0.1	)		69.0		—		1.3		67.7
Municipal securities		272.1		1.1		(0.1	)		273.1		—		90.1		183.0

Subtotal		1,512.0		5.9		(1.7	)		1,516.2		11.0		432.9		1,072.3

Level 3:
Municipal securities		20.0		—		(3.6	)		16.4		—		—		16.4

Subtotal		20.0		—		(3.6	)		16.4		—		—		16.4

Total assets measured at fair value	$	2,170.7	$	6.4	$	(5.3	)	$	2,171.8	$	465.8	$	563.4	$	1,142.6

Summary Of Contractual Maturities Of Cash Equivalents And Available-For-Sale Investments


	Amortized Cost		Fair Value
Mature in less than one year	$	1,233.5	$	1,234.7
Mature in one to five years		1,580.3		1,588.7
Mature in after five years		8.0		7.4

Total	$	2,821.8	$	2,830.8

Schedule Of Available-For-Sale Investments With Unrealized Losses

The following tables present the breakdown of the available-for-sale investments with unrealized losses at December 31, 2012 and 2011 (in millions):


	Unrealized losses less than 12 months					Unrealized losses 12 months or greater					Total
December 31, 2012	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Corporate securities	$	148.5	$	(0.2	)	$	8.4	$	(0.2	)	$	156.9	$	(0.4	)
Municipal securities		127.0		(0.2	)		—		—			127.0		(0.2	)
Commercial paper		27.1		—			—		—			27.1		—
Non-U.S. government securities		3.8		—			—		—			3.8		—
U.S. government agencies		15.3		—			—		—			15.3		—
Municipal securities		—		—			7.4		(0.6	)		7.4		(0.6	)

	$	321.7	$	(0.4	)	$	15.8	$	(0.8	)	$	337.5	$	(1.2	)

December 31, 2011
U.S. government agencies	$	168.8	$	(0.1	)	$	—	$	—		$	168.8	$	(0.1	)
Municipal securities		48.0		(0.1	)		—		—			48.0		(0.1	)
Auction rate securities		—		—			16.4		(3.6	)		16.4		(3.6	)
Non-U.S. government securities		34.5		(0.1	)		—		—			34.5		(0.1	)
Corporate securities		212.1		(1.4	)		—		—			212.1		(1.4	)

	$	463.4	$	(1.7	)	$	16.4	$	(3.6	)	$	479.8	$	(5.3	)

Schedule Of Reconciliation For All Assets Measured At Fair Value Using Significant Unobservable Inputs (Level 3)

The following table provides reconciliation for all assets measured at fair value using significant unobservable Level 3 inputs for the years ended December 31, 2012 and 2011 (in millions):


	Fair Value Measurements at Reporting Date Using Significant Unobservable Inputs (Level 3)
	Municipal securities
Balance at January 1, 2011	$	18.6
Sales		(2.6	)
Total gains or (losses):
Included in other comprehensive income (loss)		0.4
Included in earnings		—

Balance at December 31, 2012		16.4
Sales		(12.0	)
Total gains or (losses):
Included in other comprehensive income (loss)		3.0
Included in earnings		—

Balance at December 31, 2012	$	7.4

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27198-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19, 20, 21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 17
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-1
-Paragraph 21
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2012

Details Of Selected Balance Sheet Items

The following table provides details of selected balance sheet items (in millions):


	December 31,
	2012			2011
Inventory:
Raw materials	$	41.2		$	34.8
Work-in-process		4.4			2.5
Finished goods		75.9			74.8

Total inventory	$	121.5		$	112.1

Property, plant and equipment, net:
Land	$	83.6		$	72.1
Building and building/leasehold improvements		99.1			88.1
Machinery and equipment		105.0			68.0
Computer and office equipment		19.2			15.7
Capitalized software		53.9			50.5
Construction-in-process		15.4			11.4

		376.2			305.8
Less: Accumulated depreciation		(134.4	)		(108.6	)

Total property, plant and equipment, net	$	241.8		$	197.2

Other accrued liabilities—short term:
Other accrued liabilities	$	44.6		$	24.8
Taxes payable		5.8			8.5
Accrued professional fees		3.9			4.2

Total other accrued liabilities—short-term	$	54.3		$	37.5

Other long-term liabilities:
Income taxes—long term	$	76.7		$	95.9
Other long-term liabilities		0.8			1.0

Total other long-term liabilities	$	77.5		$	96.9

Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Estimated Future Amortization Expense Of Intangible Assets

The estimated future amortization expense of intangible assets as of December 31, 2012 is as follows (in millions):


Fiscal Year	Amount
2013	$	21.1
2014		17.5
2015		17.3
2016		14.4
2017		8.4
2018 and thereafter		4.9

Total	$	83.6

Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Future Minimum Lease Commitments Under Operating Leases

Future minimum lease commitments under the Company’s operating leases as of December 31, 2012 are as follows (in millions):


Years	Amount
2013	$	3.8
2014		2.9
2015		1.2
2016		0.4
2017 and beyond		0.2

	$	8.5

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Stock Repurchase Activities

The following table provides the stock repurchase activities during the years ended December 31, 2012, 2011, and 2010 (in millions, except per share amounts):


	Years Ended December 31,
	2012		2011		2010
Shares repurchased		0.4		1.0		0.7
Average price per share	$	503.05	$	344.72	$	267.81
Value of shares repurchased	$	238.3	$	331.8	$	198.6

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Summary Of Stock Option Activity Under All Stock Plans

Option activity during fiscal 2012 under all the stock plans was as follows (in millions, except per share amounts):


				STOCK OPTIONS OUTSTANDING
	Shares Available for Grant			Number Outstanding			Weighted Average Exercise Price Per Share
Balance at December 31, 2011 (with 2.4 options exerciseable at a weighted-average exercise price of $212.43 per share and with 4.5 options vested and expected to vest at a weighted-average exercise price of $252.57 per share)		1.6			4.7		$	254.19
Options authorized		1.4			—
Options granted		(1.4	)		1.4			513.25
Options exercised		—			(1.2	)		203.48
Options forfeited/expired		0.1			(0.1	)		371.29

Balance at December 31, 2012 (with 2.5 options exerciseable at a weighted-average exercise price of $268.31 per share and with 4.8 options vested and expected to vest at a weighted-average exercise price of $340.83 per share)		1.7			4.8		$	340.83

Summary Of Significant Ranges Of Outstanding And Exercisable Options

The following table summarizes significant ranges of outstanding and exercisable options as of December 31, 2012 (number of shares in millions):


	Options Outstanding								Options Exercisable
Range of Exercise Prices	Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)		Number of Shares		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (1)
$0.00–$260.65		1.0		5.11	$	117.67				0.9			$	113.33
$264.15–$334.30		1.3		6.46		318.02				1.0				315.11
$341.19–$365.98		1.0		8.05		343.52				0.4				344.75
$368.70–$517.31		1.3		9.31		501.12				0.3				499.46
$518.29–$579.24		0.2		9.58		545.91				0.0				551.72

TOTAL		4.8		7.40	$	340.83	$	746.9		2.5		6.34	$	268.31	$	567.6

(1)	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company’s closing stock price of $490.37 as of December 31, 2012, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

Summary Of Stock-Based Compensation Charges

The following table summarizes stock-based compensation expense (in millions):


	Years Ended December 31,
	2012		2011		2010
Cost of sales—products	$	14.1	$	12.3	$	9.6
Cost of sales—services		12.9		11.0		8.4

Total cost of sales		27.0		23.3		18.0
Selling, general and administrative		93.1		84.3		77.0
Research and development		33.2		28.8		22.6

Stock-based compensation expense before income taxes		153.3		136.4		117.6
Income tax effect		47.5		42.9		39.2

Stock-based compensation expense after income taxes	$	105.8	$	93.5	$	78.4

Schedule Of Estimated Fair Value Of The Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions

The weighted average estimated fair values of the stock options and rights to acquire stock granted under the Company’s employee purchase plan as well as the weighted average assumptions used in calculating these values during the years ended December 31, 2012, 2011, and 2010, were based on estimates at the date of grant as follows:


	Years Ended December 31,
STOCK OPTION PLANS	2012			2011			2010
Average risk free interest rate		0.80	%		2.16	%		2.24	%
Average expected term (years)		4.34			4.75			4.80
Average volatility		33	%		35	%		36	%
Weighted average fair value at grant date	$	146.26		$	116.03		$	111.84
Total stock-based compensation expense (in millions)	$	139.9		$	128.3		$	109.1

EMPLOYEE STOCK PURCHASE PLAN
Average risk free interest rate		0.17	%		0.32	%		0.43	%
Average expected term (years)		1.3			1.30			1.30
Average volatility		32	%		33	%		39	%
Weighted average fair value at grant date	$	138.61		$	99.94		$	106.72
Total stock-based compensation expense (in millions)	$	13.4		$	8.1		$	8.5

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Income Before Provision For Income Taxes

Income before provision for income taxes for the years ended December 31, 2012, 2011, and 2010 consisted of the following (in millions):


	Years Ended December 31,
	2012		2011		2010
U.S	$	718.5	$	540.3	$	438.7
Foreign		175.4		169.4		133.6

Total income before provision for income taxes	$	893.9	$	709.7	$	572.3

Schedule Of Provision For Income Taxes

The provision for income taxes for the years ended December 31, 2012, 2011, and 2010 consisted of the following (in millions):


	Years Ended December 31,
	2012			2011			2010
Current
Federal	$	239.9		$	195.7		$	189.9
State		17.0			8.1			20.0
Foreign		3.4			3.7			2.1

	$	260.3		$	207.5		$	212.0

Deferred
Federal	$	(20.6	)	$	6.8		$	(22.2	)
State		(1.2	)		0.4			0.5
Foreign		(1.2	)		(0.1	)		0.2

	$	(23.0	)	$	7.1		$	(21.5	)

Total income tax expense	$	237.3		$	214.6		$	190.5

Schedule Of Income Tax Difference From The Statutory Rate

Income tax expense differs from amounts computed by applying the statutory rate of 35% for the years ended December 31, 2012, 2011, and 2010 as a result of the following (in millions):


	Years Ended December 31,
	2012			2011			2010
Federal tax at statutory rate	$	312.9		$	248.3		$	200.3
Increase (reduction) in tax resulting from:
State taxes, net of federal benefits		15.8			8.5			20.5
Foreign rate differential		(42.8	)		(47.7	)		(31.3	)
Research and development credit		—			(6.6	)		(4.6	)
Stock compensation not benefitted		5.9			5.1			4.8
Domestic production activities deduction		(8.2	)		—			—
Releases due to statute expirations and other		(46.5	)		—			—
Other		0.2			7.0			0.8

	$	237.3		$	214.6		$	190.5

Schedule Of Deferred Tax Assets


	December 31,
	2012			2011
Deferred tax assets:
Stock-based compensation expense	$	85.3		$	69.2
Expenses deducted in later years for tax purposes		25.9			19.6
Research and other credits		5.3			2.1
Other		1.2			0.5

Gross deferred tax assets	$	117.7		$	91.4
Valuation allowance		(6.0	)		(2.8	)

Deferred tax assets	$	111.7		$	88.6

Deferred tax liabilities:
Fixed assets	$	(12.3	)	$	(11.8	)
Identified intangible assets related to acquisitions		(2.2	)		—
Other		(3.8	)		(1.5	)

Deferred tax liabilities	$	(18.3	)	$	(13.3	)

Net deferred tax assets	$	93.4		$	75.3

Schedule Of Gross Unrecognized Income Tax Benefits

A reconciliation of the beginning and ending amounts of gross unrecognized income tax benefits for the years ended December 31, 2012, 2011, and 2010 are as follows (in millions):


	Years Ended December 31,
	2012			2011		2010
Beginning balance	$	98.1		$	78.9	$	70.0
Increases related to tax positions taken during the current year		17.5			18.1		9.1
Increases related to tax positions taken during a prior year		12.9			1.1		—
Decreases related to tax positions taken during a prior year		(8.3	)		—		(0.2	)
Decreases related to expiration of statute of limitations		(32.2	)		—		—

Ending balance	$	88.0		$	98.1	$	78.9

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Computation Of Basic And Diluted Net Income Per Share

The following table presents the computation of basic and diluted net income per share (in millions, except per share amounts):


	Years Ended December 31,
	2012		2011		2010
Net income	$	656.6	$	495.1	$	381.8
Basic:
Weighted-average shares outstanding		39.8		39.2		39.2

Basic net income per share	$	16.50	$	12.63	$	9.74

Diluted:
Weighted-average shares outstanding used in basic calculation		39.8		39.2		39.2
Add: Dilutive potential shares		1.3		1.0		1.1

Weighted-average shares used in computing diluted net income per share		41.1		40.2		40.3

Diluted net income per share	$	15.98	$	12.32	$	9.47

Selected Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2012

Schedule Of Selected Quarterly Data

SELECTED QUARTERLY DATA

(UNAUDITED, IN MILLIONS, EXCEPT PER SHARE AMOUNTS)


	2012
	Q1		Q2		Q3		Q4
Revenue	$	495.2	$	536.5	$	537.8	$	609.3
Gross profit	$	355.9	$	386.4	$	390.1	$	437.9
Net income	$	143.5	$	154.9	$	183.3	$	174.9
Net income per common share
Basic	$	3.63	$	3.88	$	4.59	$	4.37
Diluted	$	3.50	$	3.75	$	4.46	$	4.25

	2011
	Q1		Q2		Q3		Q4
Revenue	$	388.1	$	425.7	$	446.7	$	496.8
Gross profit	$	278.8	$	306.6	$	325.5	$	362.9
Net income	$	104.1	$	117.4	$	122.4	$	151.2
Net income per common share
Basic	$	2.66	$	2.99	$	3.13	$	3.86
Diluted	$	2.59	$	2.91	$	3.05	$	3.75

Summary Of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($) d Customer	Dec. 31, 2011 USD ($) Customer	Dec. 31, 2010 USD ($) Customer
Summary Of Significant Accounting Policies [Line Items]
Number of customers representing more than 10% accounts receivable \| Customer	0	0
Number of customers representing more than 10% of total revenue \| Customer	0	0	0
Highly liquid investments, maximum number of days qualifying cash equivalents \| d	90
Depreciation expense	$ 34.7	$ 28.7	$ 23.7
Estimated useful life of software	6 years	6 years
Impairment of goodwill	$ 0.0
Market-based implied volatility percentage	100.00%
Percentage of likelihood of realization of tax benefits to recognize tax benefits from uncertain tax positions	50
United States
Summary Of Significant Accounting Policies [Line Items]
Long-lived assets maintained, percent	97.00%	97.00%
Software and Software Development Costs
Summary Of Significant Accounting Policies [Line Items]
Capitalized computer software, gross	$ 4.1	$ 5.2
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of software	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of software	9 years
Maximum \| Software and Software Development Costs
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of software	5 years
Accounts Receivable \| United States
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	79.00%	77.00%
Total Revenue \| United States
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	79.00%	78.00%	80.00%
Total Revenue \| International
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	21.00%	22.00%	20.00%

Estimated Useful Lives Of Assets (Detail)	12 Months Ended
Estimated Useful Lives Of Assets (Detail)	Dec. 31, 2012
Building \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	30 years
Building Improvements \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	15 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	Lesser of useful life or term of lease
Equipment and Furniture \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	5 years
Computer Equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	3 years
Enterprise-Wide Software \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, maximum estimated useful lives, years	5 years
Purchased Software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful lives	Lesser of 3 years or life of license

Summary Of Cash And Available-For-Sale Securities (Detail) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 2,911.5	$ 2,170.7
Gross Unrealized Gains	10.2	6.4
Gross Unrealized Losses	(1.2)	(5.3)
Fair Value	2,920.5	2,171.8
Cash and cash equivalents	553.7	465.8	$ 279.8	$ 221.4
Short-term investments	770.7	563.4
Long-term investments	1,596.1	1,142.6
Cash
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	89.7	51.6
Fair Value	89.7	51.6
Cash and cash equivalents	89.7	51.6
Level 1
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	567.3	587.1
Gross Unrealized Gains	0.2	0.5
Fair Value	567.5	587.6
Cash and cash equivalents	388.1	403.2
Short-term investments	155.4	130.5
Long-term investments	24.0	53.9
Level 1 \| Money Market Funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	388.1	403.2
Fair Value	388.1	403.2
Cash and cash equivalents	388.1	403.2
Level 1 \| U.S. Treasuries & Corporate Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	179.2	183.9
Gross Unrealized Gains	0.2	0.5
Fair Value	179.4	184.4
Short-term investments	155.4	130.5
Long-term investments	24.0	53.9
Level 2
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,246.5	1,512.0
Gross Unrealized Gains	10.0	5.9
Gross Unrealized Losses	(0.6)	(1.7)
Fair Value	2,255.9	1,516.2
Cash and cash equivalents	75.9	11.0
Short-term investments	615.3	432.9
Long-term investments	1,564.7	1,072.3
Level 2 \| Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	157.4	63.5
Fair Value	157.4	63.5
Cash and cash equivalents	75.9	11.0
Short-term investments	81.5	52.5
Level 2 \| Corporate Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	952.1	586.6
Gross Unrealized Gains	5.8	3.0
Gross Unrealized Losses	(0.4)	(1.4)
Fair Value	957.5	588.2
Short-term investments	274.6	162.4
Long-term investments	682.9	425.8
Level 2 \| U.S. Government Agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	636.9	521.1
Gross Unrealized Gains	2.6	1.4
Gross Unrealized Losses		(0.1)
Fair Value	639.5	522.4
Short-term investments	133.6	126.6
Long-term investments	505.9	395.8
Level 2 \| Non-U.S. Government Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	90.8	68.7
Gross Unrealized Gains	0.5	0.4
Gross Unrealized Losses		(0.1)
Fair Value	91.3	69.0
Short-term investments	21.8	1.3
Long-term investments	69.5	67.7
Level 2 \| Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	409.3	272.1
Gross Unrealized Gains	1.1	1.1
Gross Unrealized Losses	(0.2)	(0.1)
Fair Value	410.2	273.1
Short-term investments	103.8	90.1
Long-term investments	306.4	183.0
Level 3
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8.0	20.0
Gross Unrealized Losses	(0.6)	(3.6)
Fair Value	7.4	16.4
Long-term investments	7.4	16.4
Level 3 \| Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8.0	20.0
Gross Unrealized Losses	(0.6)	(3.6)
Fair Value	7.4	16.4
Long-term investments	$ 7.4	$ 16.4

Summary Of Contractual Maturities Of Cash Equivalents And Available-For-Sale Investments (Detail) $ in Millions	Dec. 31, 2012 USD ($)
Amortized Cost
Mature in less than one year, amortized Cost	$ 1,233.5
Mature in one to five years, amortized Cost	1,580.3
Mature in after five years, amortized Cost	8.0
Total, amortized Cost	2,821.8
Fair Value
Mature in less than one year, fair value	1,234.7
Mature in one to five years, fair value	1,588.7
Mature in after five years, fair value	7.4
Total, fair value	$ 2,830.8

Financial Instruments - Additional Information (Detail) € in Millions, ₩ in Millions, £ in Millions, SFr in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 EUR (€)	Dec. 31, 2012 KRW (₩)	Dec. 31, 2012 CHF (SFr)	Dec. 31, 2012 GBP (£)	Dec. 31, 2011 EUR (€)	Dec. 31, 2011 KRW (₩)	Dec. 31, 2011 CHF (SFr)	Dec. 31, 2011 GBP (£)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized gains recognized on the sale of investments	$ (1.9)	$ 2.5
Accumulated other comprehensive income, net unrealized gains (losses) on investments, net of tax	6.2	1.1
Derivative liabilities	2.7
Derivative assets		3.5
Notional amounts of outstanding currency forward contracts				€ 20.0	₩ 4,400.0			€ 0.0	₩ 0.0
Notional amounts of currency forward contracts to hedge non-functional currency denominated net monetary assets and liabilities				€ 37.6	₩ 4,600.0	SFr (1.0)	£ 5.4	€ 35.0		SFr (1.7)	£ 1.8
Net foreign exchange gains (losses)	0.3	0.3	$ (2.6)
Foreign Exchange Forward \| Other Income \| Not Designated As Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized as interest and other income, net, related to derivative instruments used to hedge against balance sheet foreign currency exposures	$ (0.7)	$ (1.2)	$ 3.1

Schedule Of Available-For-Sale Investments With Unrealized Losses (Detail) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	$ 321.7	$ 463.4
Unrealized losses less than 12 months	(0.4)	(1.7)
Unrealized losses 12 months or greater Fair Value	15.8	16.4
Unrealized losses 12 months or greater	(0.8)	(3.6)
Total Fair Value	337.5	479.8
Total Unrealized Losses	(1.2)	(5.3)
Corporate Note Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	148.5	212.1
Unrealized losses less than 12 months	(0.2)	(1.4)
Unrealized losses 12 months or greater Fair Value	8.4
Unrealized losses 12 months or greater	(0.2)
Total Fair Value	156.9	212.1
Total Unrealized Losses	(0.4)	(1.4)
Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	127.0	48.0
Unrealized losses less than 12 months	(0.2)	(0.1)
Total Fair Value	127.0	48.0
Total Unrealized Losses	(0.2)	(0.1)
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	27.1
Total Fair Value	27.1
Non U S Government Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	3.8	34.5
Unrealized losses less than 12 months		(0.1)
Total Fair Value	3.8	34.5
Total Unrealized Losses	0.0	(0.1)
US Federal Government Agencies
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses less than 12 months Fair Value	15.3	168.8
Unrealized losses less than 12 months		(0.1)
Total Fair Value	15.3	168.8
Total Unrealized Losses	0.0	(0.1)
Auction Rate Securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses 12 months or greater Fair Value	7.4	16.4
Unrealized losses 12 months or greater	(0.6)	(3.6)
Total Fair Value	7.4	16.4
Total Unrealized Losses	$ (0.6)	$ (3.6)

Schedule Of Reconciliation For All Assets Measured At Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 16.4	$ 18.6
Sales	(12.0)	(2.6)
Total gains or (losses): Included in other comprehensive income (loss)	3.0	0.4
Total gains or (losses): Included in earnings	0.0	0.0
Ending Balance	$ 7.4	$ 16.4

Details Of Selected Balance Sheet Items (Detail) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Inventory:
Raw materials	$ 41.2	$ 34.8
Work-in-process	4.4	2.5
Finished goods	75.9	74.8
Total inventory	121.5	112.1
Property, plant and equipment, net:
Land	83.6	72.1
Building and building/leasehold improvements	99.1	88.1
Machinery and equipment	105.0	68.0
Computer and office equipment	19.2	15.7
Capitalized software	53.9	50.5
Construction-in-process	15.4	11.4
Property, Plant and Equipment, Gross, Total	376.2	305.8
Less: Accumulated depreciation	(134.4)	(108.6)
Total property, plant and equipment, net	241.8	197.2
Other accrued liabilities-short term:
Other accrued liabilities	44.6	24.8
Taxes payable	5.8	8.5
Accrued professional fees	3.9	4.2
Total other accrued liabilities-short-term	54.3	37.5
Other long-term liabilities:
Income taxes-long term	76.7	95.9
Other long-term liabilities	0.8	1.0
Total other long-term liabilities	$ 77.5	$ 96.9

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill and Intangible Assets Disclosure [Line Items]
Date of acquiring Korean distributor	Jan. 11, 2012
Goodwill	$ 138.1	$ 116.9
Gross carrying amount of intangible assets, intellectual property	177.7	136.1
Acquired intellectual property	$ 41.6	$ 16.8
Weighted average useful life, years	6 years	6 years
Amortization expense related to intangible assets	$ 23.1	$ 17.8	$ 16.7
Accumulated amortization of intangible assets	$ 94.1	$ 71.0

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Schedule Of Estimated Future Amortization Expense Of Intangible Assets (Detail) $ in Millions	Dec. 31, 2012 USD ($)
Finite Lived Intangible Assets Future Amortization Expense [Line Items]
2013	$ 21.1
2014	17.5
2015	17.3
2016	14.4
2017	8.4
2018 and thereafter	4.9
Total	$ 83.6

Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($) yr	Aug. 10, 2011 d
Commitments and Contingencies
Operating lease maximum term (in years) \| yr	3
Other commitments \| $	$ 292.2
Time limit given to plaintiffs for filing amended complaint, days \| d		30

Schedule Of Future Minimum Lease Commitments Under Operating Leases (Detail) $ in Millions	Dec. 31, 2012 USD ($)
Commitments and Contingencies
2013	$ 3.8
2014	2.9
2015	1.2
2016	0.4
2017 and beyond	0.2
Total	$ 8.5

Stockholder's Equity - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Oct. 31, 2011	Feb. 28, 2011	Jul. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stockholders Equity Note [Line Items]
Stock repurchase program, authorized amount	$ 500.0	$ 400.0	$ 150.0
Remaining authorized amount of stock repurchases				$ 329.8
Aggregate reduction in common stock during stock repurchases				13.2	$ 19.7	$ 24.0
Amount charged to retained earnings during stock repurchases				$ 225.1	$ 312.1	$ 174.6

Schedule Of Stock Repurchase Activities (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity
Shares repurchased	0.4	1.0	0.7
Average price per share	$ 503.05	$ 344.72	$ 267.81
Value of shares repurchased	$ 238.3	$ 331.8	$ 198.6

Stock Based Compensation - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2012 USD ($) yr mo h shares	Dec. 31, 2011 USD ($) shares	Dec. 31, 2010 USD ($) shares	Oct. 31, 2009 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised under stock option plans	$ 375.7	$ 262.8	$ 192.9
Cash received from option exercises and employee stock purchase plans	$ 263.3	260.6	141.1
Weighted average remaining contractual life of shares vested and expected to vest, years	7 years 4 months 24 days
Aggregate intrinsic value of shares vested and expected to vest	$ 746.9
Excess tax benefit from stock-based compensation	94.2	58.8	65.2
Stock-based compensation charges, income tax effect	$ 47.5	$ 42.9	$ 39.2
2010 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years) \| yr	10
Shares were reserved for future issuance \| shares	1,500,000
General options vesting percentage upon completion of six months of service	12.50%
Share based vesting period	3 years 6 months
2009 Employment Commencement Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years) \| yr	10
Shares were reserved for future issuance \| shares	20,000
2000 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years) \| yr	10
Minimum exercise price of NSOs, percentage of fair value	85.00%
2000 Non-Employee Directors' Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, options, expiration term (in years) \| yr	10
Shares were reserved for future issuance \| shares	82,000
Stock options granted initial vesting period, years \| yr	3
Percentage shares vesting after one year of grant	33.30%
Reduction under Directors' plan, shares \| shares				150,000
Nonvested Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 281.4
Weighted average period unrecognized compensation expenses are expected to be recognized, years \| yr	2.5
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 4.4
Weighted average period unrecognized compensation expenses are expected to be recognized, years \| yr	1
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares were reserved for future issuance \| shares	500,000
Minimum hours employed per week \| h	20
Minimum months employed per year \| mo	5
Maximum percentage of employees on syockholders to participate in ESPP	5.00%
Percentage of employee payroll deduction under the stock plan, maximum	15.00%
Discount on fair market value on the purchase date	85.00%
Discount on fair market value on the offering date	85.00%
Employee stock purchase plan, shares issued \| shares	100,000	100,000	100,000
Employee stock purchase plan, value of shares issued	$ 27.8	$ 18.5	$ 14.3

Summary Of Stock Option Activity Under All Stock Plans (Detail) shares in Millions	12 Months Ended
	Dec. 31, 2012 $ / shares shares
Stock-Based Compensation
Beginning balance, Shares Available for Grant	1.6
Options authorized, Shares Available for Grant	1.4
Options granted, Shares Available for Grant	(1.4)
Options exercised , Shares Available for Grant
Options canceled/expired, Shares Available for Grant	0.1
Ending balance, Shares Available for Grant	1.7
Number Outstanding
Beginning balance, Number outstanding	4.7
Options authorized, Number Outstanding
Options granted, Number Outstanding	1.4
Options exercised, Number Outstanding	(1.2)
Options canceled/expired, Number Outstanding	(0.1)
Ending balance, Number Outstanding	4.8
Weighted Average Exercise Price per share
Beginning balance, Weighted Average Exercise Price Per Share \| $ / shares	$ 254.19
Options authorized, Weighted Average Exercise Price Per Share \| $ / shares	0
Options granted, Weighted Average Exercise Price Per Share \| $ / shares	513.25
Options exercised, Weighted Average Exercise Price Per Share \| $ / shares	203.48
Options forfeited/expired, Weighted Average Exercise Price Per Share \| $ / shares	371.29
Ending balance, Weighted Average Exercise Price Per Share \| $ / shares	$ 340.83

Summary Of Stock Option Activity Under All Stock Plans (Parenthetical) (Detail) shares in Millions	Dec. 31, 2012 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options exercisable, number of shares beginning balance \| shares	2.4
Options exercisable, weighted-average exercise price per share beginning balance \| $ / shares	$ 212.43
Options vested and expected to vest, shares of options beginning balance \| shares	4.5
Options vested and expected to vest, weighted-average exercise price beginning balance \| $ / shares	$ 252.57
Options exercisable, number of shares ending balance \| shares	2.5
Options exercisable, weighted-average exercise price per share ending balance \| $ / shares	$ 268.31
Options vested and expected to vest, shares of options ending balance \| shares	4.8
Options vested and expected to vest, weighted-average exercise price ending balance \| $ / shares	$ 340.83

Outstanding and Exercisable Options Ranges (Detail)
$ / shares in Units, shares in Millions

12 Months Ended

Dec. 31, 2012

USD ($)

$ / shares

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Options Outstanding, Number of Shares | shares

4.8

Options Exercisable, Number of Shares | shares

2.5

Options Outstanding, Weighted Average Remaining Contractual Life

7 years 4 months 24 days

Options Exercisable, Weighted Average Remaining Contractual Life

6 years 4 months 2 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 340.83

Options Exercisable, Weighted Average Exercise Price Per Share

$ 268.31

Options Outstanding, Aggregate Intrinsic Value | $

$ 746.9

^[1]

Options Exercisable, Aggregate Intrinsic Value | $

$ 567.6

^[1]

Exercise Price $0.00 - $260.65

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Range of Exercise Prices, minimum

$ 0.00

Range of Exercise Prices, maximum

$ 260.65

Options Outstanding, Number of Shares | shares

1.0

Options Exercisable, Number of Shares | shares

0.9

Options Outstanding, Weighted Average Remaining Contractual Life

5 years 1 month 10 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 117.67

Options Exercisable, Weighted Average Exercise Price Per Share

113.33

Exercise Price $264.15 - $334.30

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Range of Exercise Prices, minimum

264.15

Range of Exercise Prices, maximum

$ 334.30

Options Outstanding, Number of Shares | shares

1.3

Options Exercisable, Number of Shares | shares

1.0

Options Outstanding, Weighted Average Remaining Contractual Life

6 years 5 months 16 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 318.02

Options Exercisable, Weighted Average Exercise Price Per Share

315.11

Exercise Price $341.19 - $365.98

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Range of Exercise Prices, minimum

341.19

Range of Exercise Prices, maximum

$ 365.98

Options Outstanding, Number of Shares | shares

1.0

Options Exercisable, Number of Shares | shares

0.4

Options Outstanding, Weighted Average Remaining Contractual Life

8 years 18 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 343.52

Options Exercisable, Weighted Average Exercise Price Per Share

344.75

Exercise Price $368.70 - $517.31

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Range of Exercise Prices, minimum

368.70

Range of Exercise Prices, maximum

$ 517.31

Options Outstanding, Number of Shares | shares

1.3

Options Exercisable, Number of Shares | shares

0.3

Options Outstanding, Weighted Average Remaining Contractual Life

9 years 3 months 22 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 501.12

Options Exercisable, Weighted Average Exercise Price Per Share

499.46

Exercise Price $518.29 - $579.24

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Range of Exercise Prices, minimum

518.29

Range of Exercise Prices, maximum

$ 579.24

Options Outstanding, Number of Shares | shares

0.2

Options Exercisable, Number of Shares | shares

0.0

Options Outstanding, Weighted Average Remaining Contractual Life

9 years 6 months 29 days

Options Outstanding, Weighted Average Exercise Price Per Share

$ 545.91

Options Exercisable, Weighted Average Exercise Price Per Share

$ 551.72

[1]	The aggregate intrinsic value represents the total pre-tax intrinsic value, based on the Company's closing stock price of $490.37 as of December 31, 2012, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date.

Outstanding and Exercisable Options Ranges (Parenthetical) (Detail)	Dec. 31, 2012 USD ($)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Closing stock price	$ 490.37

Summarizes Stock-Based Compensation Charges (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	$ 153.3	$ 136.4	$ 117.6
Income taxes	47.5	42.9	39.2
Stock-based compensation expense after income tax effect	105.8	93.5	78.4
Total Cost Of Sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	27.0	23.3	18.0
Total Cost Of Sales \| Cost Of Sales - Products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	14.1	12.3	9.6
Total Cost Of Sales \| Cost Of Sales - Service
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	12.9	11.0	8.4
Selling, General And Administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	93.1	84.3	77.0
Research And Development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	$ 33.2	$ 28.8	$ 22.6

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Schedule Of Estimated Fair Value Of Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 153.3	$ 136.4	$ 117.6
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate	0.80%	2.16%	2.24%
Average expected term (years)	4 years 4 months 2 days	4 years 9 months	4 years 9 months 18 days
Average volatility	33.00%	35.00%	36.00%
Weighted average fair value at grant date	$ 146.26	$ 116.03	$ 111.84
Total stock-based compensation expense	$ 139.9	$ 128.3	$ 109.1
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk free interest rate	0.17%	0.32%	0.43%
Average expected term (years)	1 year 3 months 18 days	1 year 3 months 18 days	1 year 3 months 18 days
Average volatility	32.00%	33.00%	39.00%
Weighted average fair value at grant date	$ 138.61	$ 99.94	$ 106.72
Total stock-based compensation expense	$ 13.4	$ 8.1	$ 8.5

- Definition

+ References + Details

Schedule Of Income Before Provision For Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Income Before Income Tax [Line Items]
Income before provision for income taxes, U.S.	$ 718.5	$ 540.3	$ 438.7
Income before provision for income taxes, Foreign	175.4	169.4	133.6
Income before income taxes	$ 893.9	$ 709.7	$ 572.3

Schedule Of Provision For Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Provision For Income Taxes [Line Items]
Current income taxes, Federal	$ 239.9	$ 195.7	$ 189.9
Current income taxes, State	17.0	8.1	20.0
Current income taxes, Foreign	3.4	3.7	2.1
Current income taxes	260.3	207.5	212.0
Deferred income taxes, Federal	(20.6)	6.8	(22.2)
Deferred income taxes, State	(1.2)	0.4	0.5
Deferred income taxes, Foreign	(1.2)	(0.1)	0.2
Deferred income taxes	(23.0)	7.1	(21.5)
Total income tax expense	$ 237.3	$ 214.6	$ 190.5

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Line Items]
Federal statutory tax rate			35.00%	35.00%	35.00%
Cumulative amount of earnings upon which U.S. income taxes have not been provided		$ 421.8	$ 421.8
Valuation allowance		6.0	6.0	$ 2.8
Unrecognized tax benefits, period increase (decrease)			(10.1)
Reversal of gross unrecognized tax benefits in connection with the expiration of certain statutes of limitations		(32.2)	32.2
Total gross unrecognized tax benefits		88.0	88.0	98.1	$ 78.9	$ 70.0
Unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate		83.8	83.8	93.8	74.7
Gross interest related to unrecognized tax benefits accrued		$ 3.2	3.2	$ 7.9	$ 5.5
Unrecognized tax benefits, decrease in interest			(4.7)
Reversal of previously unrecognized tax benefits			1.4
Revaluation of Assets
Income Taxes [Line Items]
Unrecognized tax benefits, period increase (decrease)	$ (8.3)
Reversal of gross unrecognized tax benefits in connection with the expiration of certain statutes of limitations			$ 6.1

Schedule Of Income Tax Difference From Statutory Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components Of Income Tax Expense Benefit [Line Items]
Federal tax at statutory rate	$ 312.9	$ 248.3	$ 200.3
State taxes, net of federal benefits	15.8	8.5	20.5
Foreign rate differential	(42.8)	(47.7)	(31.3)
Research and development credit		(6.6)	(4.6)
Stock compensation not benefitted	5.9	5.1	4.8
Domestic production activities deduction	(8.2)	0.0	0.0
Releases due to statute expirations and other	(46.5)
Other	0.2	7.0	0.8
Total income tax expense	$ 237.3	$ 214.6	$ 190.5

Schedule Of Deferred Tax Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011
Deferred Income Tax Assets And Liabilities [Line Items]
Deferred tax assets, Stock-based compensation expense	$ 85.3	$ 69.2
Deferred tax assets, Expenses deducted in later years for tax purposes	25.9	19.6
Deferred tax assets, Research and other credits	5.3	2.1
Deferred tax assets, Other	1.2	0.5
Gross deferred tax assets	117.7	91.4
Valuation allowance	(6.0)	(2.8)
Deferred tax assets	111.7	88.6
Deferred tax liabilities, Fixed assets	(12.3)	(11.8)
Identified intangible assets related to acquisitions	(2.2)
Deferred tax liabilities, Other	(3.8)	(1.5)
Deferred tax liabilities	(18.3)	(13.3)
Net deferred tax assets	$ 93.4	$ 75.3

Schedule Of Gross Unrecognized Income Tax Benefits (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Beginning balance		$ 98.1	$ 78.9	$ 70.0
Increases related to tax positions taken during the current year		17.5	18.1	9.1
Increases related to tax positions taken during a prior year		12.9	1.1
Decreases related to tax positions taken during a prior year		(8.3)		(0.2)
Decreases related to expiration of statute of limitations	$ 32.2	(32.2)
Ending balance	$ 88.0	$ 88.0	$ 98.1	$ 78.9

Computation Of Basic And Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings Per Share Disclosure [Line Items]
Net income	$ 174.9	$ 183.3	$ 154.9	$ 143.5	$ 151.2	$ 122.4	$ 117.4	$ 104.1	$ 656.6	$ 495.1	$ 381.8
Weighted-average shares outstanding									39.8	39.2	39.2
Basic net income per share	$ 4.37	$ 4.59	$ 3.88	$ 3.63	$ 3.86	$ 3.13	$ 2.99	$ 2.66	$ 16.50	$ 12.63	$ 9.74
Weighted-average shares outstanding									39.8	39.2	39.2
Add: Dilutive potential shares									1.3	1.0	1.1
Weighted-average shares used in computing diluted net income per share									41.1	40.2	40.3
Diluted net income per share	$ 4.25	$ 4.46	$ 3.75	$ 3.50	$ 3.75	$ 3.05	$ 2.91	$ 2.59	$ 15.98	$ 12.32	$ 9.47

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.21)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 18
-Article 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 230
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6519514

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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
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-Paragraph 1
-Subparagraph (a)
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+ Details

Net Income Per Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Employee stock options excluded from computation of diluted net income per share	0.9	2.1	1.3

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Employee benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Maximum rate of employees' contribution to 401(k) plan	75.00%
Employer matching contributions	$ 0	$ 0	$ 0

Schedule Of Selected Quarterly Data (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Quarterly Financial Data [Line Items]
Revenue	$ 609.3	$ 537.8	$ 536.5	$ 495.2	$ 496.8	$ 446.7	$ 425.7	$ 388.1	$ 2,178.8	$ 1,757.3	$ 1,413.0
Gross profit	437.9	390.1	386.4	355.9	362.9	325.5	306.6	278.8	1,570.3	1,273.8	1,030.0
Net income	$ 174.9	$ 183.3	$ 154.9	$ 143.5	$ 151.2	$ 122.4	$ 117.4	$ 104.1	$ 656.6	$ 495.1	$ 381.8
Basic net income per share	$ 4.37	$ 4.59	$ 3.88	$ 3.63	$ 3.86	$ 3.13	$ 2.99	$ 2.66	$ 16.50	$ 12.63	$ 9.74
Diluted net income per share	$ 4.25	$ 4.46	$ 3.75	$ 3.50	$ 3.75	$ 3.05	$ 2.91	$ 2.59	$ 15.98	$ 12.32	$ 9.47